Irregular period

So my average days between my period is 24 days however my last one was 31 days (freaked me out...) and I was bleeding for 6 days... I'm three weeks late however with my irregular cycle from last month I'd technically only be a week late tomorrow... I think. When I went pee and wiped earlier there was a little bit of light light light pink on my toilet paper buuuuut....... I'm not sure. I've been kinda being dumb and not using any sort of protection(I'm allergic to laytex so no condoms for me) and I can't afford birth control (yet!) and im super forgetful with pills (already attempted). If I'm pregnant no biggy but hopefully I'm just stressing for nothing. I have a loooonnnng history of irregular periods. I'm hoping it's stress from my grandparents dieing and there funeral being in three days...