dont know what to think

so me and my husband decided to stop ttc and go with the flow during my fertile window (accidently) we BD the next morning my stomach felt weird i dont know how to describe it i just felt ‘off’ the day after my boobs started to hurt but just in the nipple area and this is still to this day on the 4th day of feeling off i had one streak on pink blood when i wiped ive been sick every morning this week and so tired ive took 2 tests but not with fmu and both negative i dont want to get my hopes up AF is due in 2 days but i dont want her ti show either has anyone had any similar experiences