Ok, exactly a week after I had sex for the first time, I started my period. It was really really heavy for the first day and now it is night time of the second day and there is nothing. Immediately after I had sex, I had severe cramps, abdominal pain, felt dizzy, and really really tired. I bled for 2 days after I had sex, but it wasnt like a period, it was just blood. I'm scared that I could be pregnant because my period is so weird...And I don't think it's even time for me to have another one yet. My last 2 periods were close together too though....I'm soooo confused and worried...Please help me with some answers!!!