So Saturday I had sex twice that morning. Monday an Tuesday I had an on an off headache only on my left side, also cramping on an off on my left side. Wednesday I had some dull pain in my lower back. Thursday morning before I had sex I became very nauseous out of no where to the point where I thought I was going to throw up but nothing came up. Is this a good sign of maybe baby? Mind you my ovulation week/window started this Monday til Sunday. Btw those are the only two day I had sex so far. I'm still getting that headache here an there with some cramping.