Hi around two weeks ago, my Boyfriend and I were messing around and he fingered me. I am not very sure if he had precum on his finger. I was scared and I thought I had some pregnancy symptoms like nauseous after that day. And I tried to get away from that thought by just thinking that it might be my pms symptom as my period was going to come that time. 

Now i had my period. It was three days late and I had cramps more than usual before my period and during my period. The unusual thing is I had light brown discharge before my period started and now after my period I still have some brown spotting. I am still experiencing nauseous but it comes and go all day. I have constipation too. Sometimes my stomach grumbles. And my abdomen area have sharp pain some time. 

I do not have tender breasts or increase in going toilet. But I do feel my stomach bloated sometimes. Am I pregnant or am I just worrying too much. And is my nauseous because of stress?

I have not get a pregnancy test but I might go see a doctor if things get worse. I am very worried. And I am 15