he had a lil precum on his fingers

The only way to get pregnant is for a sperm to enter inside your vagina during your ovulation cycle. Pre-cum does have sperm in it. Gently tell him that is a stupid idea to stick his pre-cum in your vagina. However it is unlikely that you are pregnant from this - really unlikely. If you miss your period by more than a week, then get a cheap test to take. Going forward, if you are not ready for motherhood you must use protection. Get on birth control pills or something like that and always use a condom. When you meet the guy for your long term you can go natural. Just avoid the risk. And don't rely on the guy to have it because in the heat of the moment he either forgets it, forgets to pull it out of his wallet, or it has been in there so long it is either expired or damaged. Keep a few in your purse or car well hidden.

There are many ways to make that fingering work though. He can get you cumming with his finger dry or one of you licks it before he inserts it. Orally, he could go down on you to pleasure you taking turns or simultaneously pleasuring each other. This could occupy a long time of experimenting and eventually lead to the use of condoms. Good luck and enjoy!