I got my period on jan 22 ended on jan 26. And i was sexually active right away. He didnt use protection but pulled out when he came.. and On feb 7 I noticed pinkish discharged when I wiped then it went out and on feb 10 my abdomen was hurting like if it was bloated and on the 11 and 12 I been having brownish discharge but no pains at all. What could it be?