I'm 18 years old, my boyfriend and i have unprotected sex. I know what kind of out comes there could be and everything! Im not stupid. But this month kind of worried me. Ive NEVER been so late for my period. My last period was march 11th 2017. I was 51 days between my period. Usually I'm only 26-28. I was suppose to get it the 11th of April 2017. I finally got it April 30th(light, watery). I was having pains all month, like stomach, head aches, everything really. I took a pregnancy test Wednesday April 26(negative). I was just wondering if its actually my period & that I shouldn't have to worry or call my doctor! Thanks!