Okay ladies!!! My fertile window was the 3rd-8th. I and my boyfriend did bd 4 days out of that window. I've been since Tuesday experiencing some fatigue, nausea, and some sleepless nights cause I can't get comfortable, plus have had some acid reflux like crazy and have never had it like this. AF is not due till 23rd. What do you think please help. The dates were 3rd 5th 6th and 8th for bd.