Period Probs!?

I need some advice girls! Ok so I'm almost 27 the Red River of Pain just started yesterday no probs, was late by a day but not a big deal. Anyway these past few months I've been super moody before or during and sometimes it hurts like hell though when I first started (12) it was just like any other day. Today I had a super meltdown for no reason!! I was watching Maury and someone was cheating (nothing else was on TV) and I just broke into anxiety- thinking what if my hubby has cheated on me!! I cried like crazy for NO reason 🤧 My question .. Is this normal? I'm ok now but whoa What. The. Hell. Hubby has never gave indication that he has or would. So yeah I feel kinda crazy and not myself. Oh and I've been on Zoloft for 2 months and the past two nights I've decreased it by half to try to wean off. Could that be it if this is not normal?