My boyfriend and I have ben having unprotected sex for about three weeks now and on Frb29- march2 I stated spotting and had light cramping, then it stopped and then two days later I started my period and it lasted 2 and a half days. I took a test on march 1 and it was negative what could this mean? Am I pregnant?

Yes those are all signs of being pregnant, When is your next period due ? You may have to wait at least another two weeks and retest, or go to the doctor for a blood test.
Since it appears you are trying to get pregnant, good luck.

My next period is in April about the 4th.