2 weeks ago my boyfriend had dry pre-cum on his hand and then he fingered me i am 5 days late on my period and i just started getting clearwaterdischa

Check home preg test: Semen does not survive well/long in the outside world, but 2wks - 5d late could put you near the end of ovulation zone for your menstrual cycle...So "might" be possible. Should check home pregnancy test to find out.

Risk: Once sperm dries out it dies. If you aren't positive about how dried out it was, would take a home pregnancy test. Pre-ejaculate may contain large amounts of viable sperm (less common), smaller amounts of sperm that are dead or alive or no sperm. Thus, there is potential for pregnancy with pre-ejaculate. Sperm need to be deposited in the vagina or at the introitus for pregnancy to occur.