When to call the DR

So I'm 7 days late. I have taken 4 pregnancy tests all negative. I feel like I should wait for AF to come. But at the same time the not knowing is killing me because I have felt nauseated have tender breasts mild cramps. I know my body pretty well usally before I start I have no cramps and my breasts feel like they are in fire like don't even come near me don't touch and want to eat everything in site now I hardly have an appetite.