(((PFM)))
You and your bf are going through some tough times ~ no doubt about it.
Personally, I often try to remind myself that just because I feel "funny" inside, that doesn't mean that the relationship is doomed to failure. I have a very bad habit of pulling back emotionally & purposely bringing up sensitive subjects to test my bf. Pretty stupid, because there really is no answer that he could give to satisfy me. That is due to my own horrible insecurities. Knowing that about myself, I step away.
I don't know what to say. My insecurity and self-hate are very core issues of who I am. I don't like it ~ these problems create a lot of stress for me and people who do care about me. But, I'm active in therapy and in the "outside world". What else can I do? I can sympathize with you. Try hard not to let your paranoia rule your actions. Try not to accuse your bf. Instead, stick with the "I feel.." Try not to bring these same events up over and over ~ as it automatically puts him on defense & makes the guy want to run.
It is hard, PFM.

Try to be gentle on yourself ~ it takes a lot of practice!
p.s. Coming up on your neuro visit soon, I hope? Time seems to be dragging in this part of your world, which is engulfing!