Pregnacy symptoms. I still be pregnant?

I've been having some pregnancy symptoms even tho I had my period. I had sex April 9 and started my period April 21 and it ending April 29. Before that I had almost all the pregnancy symptoms and I still have them today (May 9) and they never stopped ! I have headaches so bad it even hurts when I stand up. My stomach has little pains and air bubble that kinda feels like gas EVERYDAY NONSTOP . I don't have breast tenderness I did but not anymore. I am hungry all the time and kinda feel nasua . I gagged a couple times but never threw up. I'm getting lots of bumps on my face as well as my neck and I never get that ! I also been burping ALOT . I have a cold which I been having for 4 days now with a sore throat . I don't know what's going on but could I still be pregnant?