Help please

Ok guys i really need your advise with out judgement... so me and my boyfriend are trying to have a baby so i haven't been on bc for almost 2 months but we went through a rough patch and broke up for a few days and (i know im a awful person but i put my bc back on and had sex 4 days later and 4 days tell ovulation ) well we got back together and i took my patch (being stupid) and had sex and now im 12 days tell my period is due and im spotting and slight cramps.. i guess im wondering what are the chances this is implatation bleeding or could me having been on the bc for 4 days and taking it off have caused a early period? Im freaking out cause i know i messed up and im scared i wont know who the dad is. Please honest opinions and experiences please and no judgeing i know what i did and i know it was wrong and im already beating my self up over it i just need advise