I am 16. I had sex for the first time and it was unprotected. I had sex July 18th and I had just a tiny bit of bleeding that didnt last more than about an hour and it was just a very little. I took a pregnancy test August 16. Today is August 23 and today I had terrible cramps. It has never felt like this before in my life and I spotted just a little bit. My boobs have been hurting so bad for a few weeks now. It hurts the worst around the nipple area. I have had a very irregular period for so long, even before having sex. I dont know what to do. I looked online to see if the test could read false if I am and it said yes and I dont know what to do. Please help me and give me advice.