Symptoms/Signs before bfp

Hey ladies so tomorrow ill 11 DPO and ibe literally taken a hpt everyday (except today) since about 5 DPO ( im obsessive ik😩) they've all been BFN. There were three where i thought they were Positive but it was Evap lines. but tonight since about a couple hours ago ive been really nauseous and it seems to be getting worse. Has anyone experience any pregnancy symptoms/signs after numerous BFNs..ive given up hope on this being my cycle for a lil bean im just waiting out AF.