I'm not on my period yet but I'm close to when normally start. This may be tmi but normally my periods are heavy and long. I'm irregular sometimes. Well I spotted the past 2 days but not today. And I felt nauseous the past 3 days. I don't use protection but he always pulls out and  makes sure "it" is not in me.  Is being this nauseous normal? Or could I still get pregnant?