This post is going to mention drug use, so please be mindful while reading!!

So about two months ago I did shrooms, it wasn't the first time I've done them, but I accidentally took a lot more than I usually have. I know with BPD you're not supposed to take them, but the other times genuinely helped. 
I had a very bad trip.
I'll spare the details, but ever since the day after I took them (about two months ago) I've noticed my dissociation has been very, very bad. It makes me so upset that every 4 minutes I'm asking myself if I'm a real person, and time moves so quickly. It is wearing me down to my core. 
I don't know if there's any correlation to the shrooms, or if it's because I've been in more stressful situations since (I started my junior year of college the next day). Does anyone have any tips on coming back into reality?