I had unprotected sex on the 24th.. and I was ovulating. About 7 days later, I was cramping and had light bleeding for just one day. The cramping lasted about 4 days. My gums have become really sensitive and bleed when I brush my teeth. About 2.days ago, I noticed my breasts really sore and sensitive too. Today I noticed the veins on my breast and around my nipple look thick, blue.. more noticeable. Im scheduled to get my period in 2 days. You'll think I could be pregnant? 

Yes, pregnancy is a possibility. However, you will have to wait until your next period is two weeks late prior to testing using first morning urine.

J_9 said it all.

Your period isn't even due yet, which means that the symptoms that you're attributing to pregnancy, isn't due to pregnancy. It's way too early for that.

The first sign of pregnancy is a missed period. Any other symptoms before you miss a period, are likely due to something else, like PMS (most pregnancy symptoms are also symptoms of PMS) or they're just in your head.

Wait until your period is due. If you miss it, wait two weeks than test using first morning urine. If you don't miss your period, you're not pregnant.

Good luck.