My period should have started two days ago. He had used a condom and I didn't notice any break in it. At first I kept feeling like my period was going to start and than it all stopped. Now I have bad headaches, I'm always tired, I keep getting cramps that come and go, I been having allot of discharge, and I noticed light spotting. I went to planned parenthood and got a pregnancy test a week after I had intercourse but it came back negative. Two weeks have passed since. (they said to get a second test done if my period does not start).

Please help!

Am I pregnant or could it be something else? And should I be worried? I don't use birth control so I know thats not it.