I'm getting really bad side effects

I take wellinta 150mg SR (wellbutrin equivalent in my country)

Idk what is wrong. Everything was fine and a few days ago, I started feeling very weird.

My symptoms are:

Twitching muscles Headache Feeling tingly or electric all over my body Impending doom sensation Blood pressure is elevated at 141/90 at rest and my heart beats are 75 Minor vision blurring or so Goosebumps all over

I literally had no side effects and everything just started getting fucked. I gave no seizure history and no genetic predisposition to it.

Idk what is wrong but I just feel awful and I can't focus on anything. Even writing this is not easy cuz my hands are cold and shaking.

Please tell me what to do?

Ps: one thing I want to note, is I had a box of wellinta 150mg Sr in my fridge for 6 months and the pills smell very strong. Not rotten egg or bad but the normal smell of the pill but much stronger. Idk if it's related, I should have probably thrown them out