4dpo pregnant?

Hi ladies! :) me & my fiance have had sex the past 2 weeks we had sex the 2 highest percentage of pregnancy which is the 2 days before ovulation. Yesterday 11/21 I was nauseous all day and real bad indigestion which I never have! Well today after eating I have been having bad indigestion once again and it feels like its burning! & sometimes it comes up and then stops. I have also been tired all day went to bed at 10:30 & woke up at 11:45am. Has anybody had real bad indigestion and nauseous starting at 3dpo & became pregnant?