somebody help !

hello ladies, I haven't been TTC this month but have had unprotected sex with my partner of course because if anything happens it happens. I am Due for AF in 2 days. This morning I had woken up feeling very nauseous and cannot eat without feeling sick? I had thrown up & this never ever happens before AF! wasn't feeling belly sick or anything it kind of came out of no where!! Could this be a sign of pregnancy???? I just want an answer so I can most probably get a test! Thanks ladies xx