When I first started hrt things were more or less totally fine, I was thriving honestly, good times. But then shit started slipping away, I could barely keep up at work and didn't have enough executive function to relax in any way. I lived like that for a bit over a year, eventually after a long search I got an ADHD diagnosis and started meds, so things have been a lot better. It was definitely a wake up call that mentally stuff was changing a lot more than I'd anticipated.
The suspected BPD is new. I've had shitty relationships and stuff in the past, I've exhibited a lot of behaviour that I'm now able to manage completely fine thanks to a decent bit of therapy, until recently. It seems I've got a very specific trigger, I was mostly able to keep things under control for a long time, but I didn't get to see my partner for an extended time because he was sick and I couldn't visit for entirely valid reasons. I stayed a night in an ER under observation, came out feeling better for a bit and started trying to fix myself up. It worked for a while, I was doing a lot better and improving my life, but then there was a perfect storm and it pushed me to a point where I couldn't recognise that I was making really bad decisions, nothing I've ever experienced before. I've no idea how to cope with fucking up so badly, I've just lost someone that meant a lot to me and now I'm alone and can't stop my brain. This is totally new, I've never ended a relationship while still in love, I've never had any fear of abandonment this strong and I've never idolised someone to this point. I've no clue if it's from the hrt, purely trauma or something else like the ADHD meds or just stress.
It sucks.