HELP I DONT KNOW IF IM PREGNANT

I'm 18 years old

I just got out of my period and after getting out of it I began having terrible stomach aches, feeling like i need to throw up, metallic taste in my mouth, and needing to pee..

I'm so scared right now I don't know if I'm pregnant or not

Note- I also had moldy bread so i don't know if that's what's affecting it