Rebound anxiety from Selank?

Used it with semax for a couple days then maybe 4 days on it's own, went great most of the time i kinda felt what i was supposed to feel for most of the days, now i have had weird anxiety for a week, a bit depressed but it's more that i am less resistant to stress, i'm happy when socializing or clubbing even sober but somethings off.

Also slept poorly but it's worse than usually when i don't sleep well, maybe selank and semax messed up my cortisol, i got really bad anxiety right after high intensity gym session that i don't usually get. And it's not like benzo rebound that gives me a more shallow anxiety.

I'm rather restless, i got a couple weird dreams where i was very frustrated, felt like a suddenly dreamt more a couple days after stopping.

Anyways i feel weird, also been getting more and more addicted to nicotine which probably makes things worse.

Last time i used selank i think it was on monday or tuesday i came home feeling emotionally numb.

anyone had a similar experience?