Two of my friends (F26,F27) invited me (F26) on a trip. But I just discovered on social media that they took the trip together without telling me. They promised to keep me in the loop with plans. What did I do wrong?

I used to live abroad and returned back to my home country last year. Two of my good friends remain there. Since I left, I have returned to visit them and other friends a number of times. Flights are incredibly cheap and the journey takes only 1hr, so it’s easy for me to travel back and forth.
Last time I was there (Jan), I was staying with one of my best friends. let’s call her ‘Laura’. It was a very strange time for me. I suffer from depression and was feeling pretty miserable heading over. Regardless, I was looking forward to the week even though I knew I wouldn’t be necessarily my ‘typical’ self.
The week was miserable but I know it was because of how I was feeling. I was trying my hardest to stay chipper for the sake of the week and I thought I was doing a decent job. However, I noticed that Laura was being exceptionally negative. She’s a cheery person usually, but I noticed for a long time (since I’ve met her almost) that she always seemed to ‘put down’ people’s comments from time to time, not just mine. It never bothered me that much until this week. I’d say black, she’d say white...constantly adding negative comments to everything I said. But because I was feeling low, everything stung. I snapped at her on the second last day over something so incredibly stupid but both of us dislike tension, confrontation...we eventually just laughed it off after 10mins.
We were visiting another town where we stayed with another one of our good friends for a night. Let’s call this other friend ‘Jess’. They spoke about going away for a weekend around Easter time and told me to come. I said it sounded great and to keep me updated on their plans.
Fast forward to me leaving to get my flight back home. One of the last things I said to Laura was to let me know about the trip. She said of course. I’ve obviously spoken to both of them since this, Laura was even texting me saying she was going on a trip (different to this) but never said that as soon as that trip was over, she and Jess were heading off on the trip that I was INVITED to.
I was on Instagram the other night and saw them both on the trip. I just dropped my phone back down on the couch. I’m now really hurt. I can’t get it out of my head.
These are friends I’ve know for 3 years. Myself and Jess have been through a lot together. Laura and I were the best of friends when I lived over there. They were both in contact with me up until they took this trip, pretty much.
I should probably say, Laura is a very honest person. At least I thought so. So I’m more disappointed in her than Jess, who can be a bit hot and cold.
But neither of them wanted to tell me the plans? Was it because I seemed low when I visited? Or do they actually not like me or want me as a friend anymore? Was it because I snapped at Laura? Is it because I live back in my home country and I’m not there so they just didn’t bother to arrange this trip with me?
I’m really confused. I’ve no idea if I should even bother to confront them. Maybe it’s just because I am here and it was a last minute thing? I don’t know. Maybe I’m missing something? What should I do?
TL;DR: Two of my best friends took a trip without me, even though the 3 of us were supposed to go together. I’m really upset and not sure what I did wrong.
UPDATE - More background:
Many people are asking if I ever had a hand at planning things with them. I apologise for not being more clear or giving more of a background on my relationship with them.
I always planned things with them when I was living near. Maybe 75% of the time at the very least. I mentioned before I loved traveling so I was generally the one who suggested and planned trips or days out. I also mentioned that I also traveled to visit them when I moved away several times. Laura came to visit me once, though.
I mentioned that Jess and I went through a lot. What I mean by that is that I was always the one there for her when she went though tough, personal things. I’ve always been that friend. I don’t always have the answers but I’m a good listener/support.
I don’t think I generally expect any of my friends to be the ones to reach out and communicate. I feel like if anything, it’s mostly 50/50. This case is an exception but only because I took their word based on trust. I also didn’t expect them to do everything because they ‘owed’ me in any way.
If it sounds like I expected them to organise this entire trip, that was not my intention and I should have been more clear. I researched with them when I was there and when I got home. I was naïve to think they’d get back to me with dates and we’d work from there together. But honestly, when Laura told me she was taking another trip, I just assumed the Paris trip was off. I should have confirmed that.
I will say one thing and I think many of you with anxiety issues or depression will understand. When I get depressed, I tend to isolate myself for a while and hide. When I have to be in a social situation, I really do try by very best to be happy and join in. As people get to know me, they notice that I’m lying. Because of this, I’m always scared I’ll lose friends. I guess that was my main worry over this. That they no longer want to be around me because of how I am but I will try and find out how I can resolve this. Maybe this is what’s bothering them.
I also just spoke with a friend who told me that their trip was spur of the moment. I’m going to talk to them when they’re back and find out for sure, but I’m feeling a lot better!
Thanks so much to everyone for the helpful replies. I’m honestly overwhelmed with the response.


Source.

Oh noze you didn't get to go on a trip and your life is now ruined and you wrote a book about it... how will you ever recover?!?!