Pregnant?

My period came a week early and was much shorter and lighter than normal, but still enough to bleed through 2 tampons a day for the 3 1/2 days I was bleeding.

I know that's way too heavy to be implantation bleeding. But my boss says she had her period for 2 months while she was pregnant with both of her children.

I had unprotected sex all month and every other day during my ovulation.

I've also been super nauseous and have thrown up.

I've eaten the same things as my boyfriend every day and he's not sick

Is this something I should take a pregnancy test for or do you think I shouldn't worry?