Am I pregnant

OK so i last had sex April 8th when I was in my fertile week now to my knowledge he never came in me, in fact he came orally and I had my period on April 23rd for 6 days now I'm due for a period and I'm 2 days late. I already have a 8 month old baby who I part time breastfeed and I got my covid vaccine. I said all that just to ask is there a possibility that maybe precum could get me pregnant or am I just crazy and my period is just thrown off. BTW I'm not usually irregular