Sounds more like an infection or STD. You may want to go to the doc for an exam and testing done.
No sweetheart, just go to the doctor or take some antibiotics. Pregnancy has symptoms more like, nausea (throwing up), frequent urination, and so on.
Could be that you have an infection of some sort. Best thing to do is see your doctor...could be something that you need medication for. They might also do a pregnancy test there too if they think you could be pregnant.