First of all, try to not be rude in the comments, I'm just searching for advice since I'm young and we all have dumb questions. I have been educated on how pregnancy works, yeah, you need penetration and ejaculation, but I wasn't teached about this:

My boyfriend was masturbating and then, he came in my mouth, so his hands didn't touch the semen. Some time after that, he fingered me, he made sure his hands were clean but I'm still scared thinking if they had any preseminal liquid. I ovulated the next week after that, and now I'm 10 days away from my period. I have been really anxious about this, it worries me a lot so I decided not to do any sexual thing until I'm prepared. Could I get pregnant from this? Today I'm just feeling my tummy weird since I have IBS and if I get nervous it starts to affect me.