Scared

I saw my ex-bf the end of January, my period had ended like 3-4 days before hand and we did oral and we dry humped but I had a thong on and he had shorts on as well. I’m worried I got pregnant somehow from precum soaking through the clothes. And I’m afraid somehow cum got on his fingers when he fingered me once. I have irregular periods and I’ve had a lot of anxiety lately and I keep feeling nauseous and I’m scared that it’s pregnancy but it could be my anxiety. My period isn’t due for another 2 days but like I said before they’re irregular. I’m just freaked thats all