should i be worried? help

so i am currently 2 days late into my four day cycle. me and my boyfriend have unprotected sex and he finished in me every time but i haven’t gotten pregnant before, i started on lo fe for a short period of time and stopped because it made me feel depressed. my period came a week earlier than expected and i bled a little longer (didn’t log) it wasn’t heavy like usual. i’ve been having cravings for foods and my breasts are tender. i feel like i’m going to be sick like somethings sitting in my throat but that goes away fairly quickly. i don’t want to overthink my possible late period symptoms but there’s a possibility. any thoughts?