Should I be scared? (Help!)

Hi! I'm young and this post may sound annoying to some but I'm currently having bad anxiety attacks. On Nov. 17 (cycle day 10), I was giving my boyfriend a handjob but he finished it bu using his right hand and he ejaculated in my mouth. Afterwards, he cleansed his hands with rubbing alcohol and we began making out. About 5 minutes, he cleansed his hands again with some alcohol twice and began fingering me. I'm afraid that there could be semen on his hands when he fingered me down there. On Nov. 24-25, I reached my ovulation peak and this was my Cycle day 17-18. I don't want to end up pregnant just because my boyfriend fingered me. Help