So, just to start off, please no mean comments.

So I just grinded with my bf, and since I really did not want to stress bc of the amount of work and tests I have upcoming we did not have intercourse. We just grinded and he fingered me while sitting on his lap. To be honest I'm just worried about precum in his fingers. Before I started all of this I tried to get as much info as possible, so while school and parents were not very helpful, Internet and books said that I should be fine, but I keep overthinking, so please help me ease me out. Bf says I should not worry. This just happened some days ago, 4 days out of my estimated fertile window, and I am 8 days away from getting my period. Help!