could i be pregnant?

Hi im 16 and i was just wondering if anyone could help me out with my problem because i need all the good advice i could get right now! My last period was on May 11 2006 and lasted about five days, but on May 21 my boyfriend and i had unprotected sex and didn’t really think anything about it. Then again on May 26 it happened again but he didn’t mean to. Later on around 11:00 that night i had a few drops of blood when i went to the bathroom it was a very light pink color and i never saw anymore after that. But i didn’t think it was implant bleeding because it was so soon. But now its June 9 and i have yet to get my period my cycles are about 24-26 days and now im about five days late. For the past three nights i have been having period like cramps but no as bad, but the thing is i NEVER have period cramps until my period has already started. They are not sharp or hurt really bad, just a odd sensation. I always wake up the next mornings and look to see if i have started, because i always start in the mornings or around 12:00 noon. My breast have been really sore and sorta tingle my tummy has been bloated for awhile and i have been peeing a lot more I take naps like crazy and yet still get a full nights rest. If anyone could help me with this i would appericiate it.

Thanks Melissa 🙂