Chances Im pregnant or I can get pregnant? I started new bc 3 weeks ago. A week Prior to that I had…

Chances Im pregnant or I can get pregnant? I started new bc 3 weeks ago. A week Prior to that I had used a plan b because we had unprotected sex and he didn't pull out fast enough. I got my period on the 6th of July which was about 5 days early but lately my cycles have been very irregular. We again had unprotected sex on the 24th 2x and he came inside both times. I'm due in 2 days but Ive felt very nauseous like early pregnancy. I am also realizing I haven't been taking my pill every exact 24 hours 😬 more like a 2 hour time frame. I know it's to early to tell but if i were pregnant would it be from earlier this month even though I had a full period? What are the chances of me getting pregnant from the 24th due to not taking pills regularly? Sorry if this doesn't make much sense but I'm just curious because I feel do not del like aunt flow is coming anytime soon..I usually PMS a week before but I didn't.. oh and I should add I believe this BC delays my period 😩 so now I'm really fucked.