I didn't have any vaginal or oral sex, I did have do some deep kissing and I "fingered" her. The thing that got me scared is that we both did not know she was getting on her period. As soon as I found out i stopped and my hand was bloody from her, I then stood up and washed my hand thoroughly with soap. I also checked to make sure my fingers did not have any visible cuts or anything out of the ordinary. Should I be worried of this?

If your hand didn't have any cuts than you are safe. NO ONE will tell you that any sexual act is 100% risk free, but the possibility that you contracted anything is less than lightning hitting you four times in a row. Don't worry you'll be fine, i'm 99.999% sure. God Bless.