early and short

so my period was 5 days early. (hate it when she does that....) no big, it happens sometimes right? BUT it was only two days long! first day was super heavy, yesterday was normal flow, then last night... poof.... all done. should I be worried? there's no way I could be pregnant with how heavy I was on day one.... right? anyone else have this happen? my normal cycle is about 28-30 days with a 4-5 day shark week. sorry, I guess I'm freaking out more because my husband just switched jobs and we won't have insurance till June. all I wanna do is call my gyno 😭