hi ,I had my peroids for december on 8th,9th and 10th. On the 13th of december i had intercourse wit my husband,,,,and on 14th i had consumed an I-pill. again i had intercourse on 20th, now my problem is iam experiencing a little blood after urination since yesterday that is from 21st. i want to nw why is this happening?another important thing,,,before 3 months i had medices for urine infection,,,,