Hello... if I had unprotected intercourse October 15 in this person did inject sperm in me. Days later I got a sore throat, nausa, runny nose, headache and didn't really have an appetite for a couple days.. I began cramping today and now I'm having what looks like a period. Do you think I'm pregnant?

I think no one in this world can know. Those are not really pregnancy signs, sounds more like you had a cold, did not eat, then was very hungry when you got feeling better.

If in doubt wait till about the 10 to 15 of Nov and do a pregnancy test, first thing in the morning