I am 3 days late on my period I am always on time with my period. I am not stressed I don't have any mood swings. I had intercorse with my husband I did bleed a little but it was not my period. Should I be pregnant?

Take a pregnancy test.

I took 2 test and they are negative

Then either it's too soon to tell, or you're just late. If you don't start in a few days, take another test.