My boyfriend of 2 years came over and we decided to do manual sex. We've never done anything sexual before. I gave him a handjob and he came. After that we went upstairs and washed our hands, then we went and took a two hour nap. When we woke up we talked about it and he fingered me. My periods are irregular but they come at the beginning of the month. Usually I have sore boobs and discharge before my periods come and this happens a week in advance. Right now I feel fine and have 0 discharge. This happened a week ago and it's almost a week into the month . I'm worried could I be pregnant?