doctors/med students of mgg

questions that i cant find an answer to on google and im too anxious to ask anyone else

1. heart palpitations /heart beating out of chest
2. quick switches from sweltering to literally freezing
3. light headedness (kinda feels like ur floating, but not in a ''im gonna pass out'' way)
4. when im working out all my symptoms go away and i feel 100x better (during the workout/a bit after) but then they all come back
5. i recently stopped taking Zoloft, but this was like a week ago atp.
oh yea and sometimes i feel a bit neasous ngl

Now dr gregory house diagnose me
my hypothesis is that its just from me stopping my meds so suddenly but its been awhile tskstslk