I believe I had my period. It lasted about 4days and was a tad shorter than usual. I am worried it could have been spotting because my boyfriend fingered me, could he have gotten me pregnant

If you haven't had sex then it's unlikely that you're pregnant. Yes, it is possible to get pregnant if your boyfriend fingered you and had sperm on his finger, but the odds of that happening aren't great. You'd have a better chance winning the lottery.

My suggestion is that you read up on how pregnancy works, so that you can better prepare yourself. If the two of you are already going down this road by fingering and other things, then it's just a matter of time before sex does become an issue. Better to be prepared, take precautions to lower the chance of pregnancy.

I would say that you don't even know enough about what causes pregnancy and what to do, to prevent it So you need to stop doing anything till you learn more.

Next did he have sperm on his fingers or was there sperm in that general area ?