Question

So ive been on the no estrogen bc pills before ive been on them for a month started on day 2 of my period(1st day was jan 18 day 2 was jan 19) now and i woke up extremely nauseous before i even taken my pill for the day ive never experienced this before i am 3mpp not breastfeed me and my husband did have unprotected sex on the 31st of jan and 1st of February then again on feb 10th all of them my husband finished in me so my question is how likely is it that ive gotten pregnant? Was in ovulation week im 4 days late on my period(ik it can be due to BC) i had cramping this morning too im still currently nauseous TIA! <3 also side note my favorite foods that i can now eat since not breastfeed have made me sick to my stomach