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Okay this is very confusing to me. My boyfriend and I have been having unprotected sex for about a year and a half now. I have never been pregnant, and get my period always on time, always with the same symptoms. Which are usually cramps, bloating, break outs, and mood swings like 4 days before my actual flow begins. We had sex on one of the days I was ovulating. Which is normal because we usually have a good amount of sex. We are both each others first and have never had another partner. We had sex one night and shortly after I had the worst stinging lower abdomen pain ever. I couldn't move for more than like 5 minutes! It was terrible. But moving on.. I was 3 days late getting my period, and on the fourth day, out of no where, I started spotting. I had absolutely no PMS symptoms!! It freaked me out because it was very light, and very weird. I didn't feel like I was on my period, but had some minor cramps. The spotting got a tad bit heavier but nothing like a period. It only lasted about 4 days. I am wondering if this could be the implantation or something? I don't know. All I know is that it did not feel like a period at all! Any help!? Please message me!!