5 days before my period

Ok so I'm 5 away from my period and TTC been trying for 2 years now, never have I puked before or felt nauseous during or before a period. Today I was in the car and felt so sick that I puked. Also I've been having some weird stomach feelings, not pain but just not normal.. anyone experience this before?  We want a baby so bad and I feel that anything is a symptom it makes me sad when I have a period. Help!