i am a 21 year old and i have and irregular period but when i get it it always last 3-4 days. My boyfriend and I had drunk sex on halloween and he didnt pull out. I cramped for 2 weeks and then i got my period it was just as heavy as normal. Had it all day yesterday but today i dont have it i have a little spotting but thats it. I took a pregnancy test last week and it came up negative. 

Help