Should I test?

I'm 17 I had my period 2 weeks ago a week early it was painful an a month ago my boyfriend came inside me usally we use condoms we have been together for almost 2 years and my friend she's 4 months pregnant told me I should test bc my feet ache and my vagina aches I've been a lil nauseas and feel bloated I'm constipated and a lil moody my boyfriend don't think I could be pregnant bc he has Xanax in his system when he cam in me and he think it will instaly make him infertile and I've been hungry but I get full quick I don't have to eat much to fill up when normally I never get full should I take a test?