So, pregnancy wouldn't really be a concern since you had protected sex and the condom didn't break and fingering also will not lead to pregnancy. You could have had some irritation during sex or gotten an abrasion that led to the pink discharge which is a small amount of fresh blood that mixes with discharge so that it is pink. Brown discharge is old blood and also pretty normal to have from time to time. I would not worry about pregnancy or this at all. Discharge can change from time to time. If you begin to itch, then you likely have something fungal like a yeast infection brewing. good luck