Could this be signs of early pregnancy?

[babyinheaven]

I had my period on Jan 29- Feb 1, according to the calendar I should have started ovulating on Feb. 12 until Feb 18. I had sex a few times between the 3rd-13th. On Saturday the 13th I had terrible cramps in the afternoon. I knew it wasn't my period because I had gotten it a few weeks ago. It is now the 17th and since yesterday my breasts have been extremely itchy. Also the week before (9th-12th) I had symptoms of a cold, sore throat, fever, stuffy nose. Are these signs that I could possibly be pregnant?