Possible symptoms

Hello ladies, so I had sex every single day during my ovulation cycle. My ovulation day was on 5/31. It has been about 4 days since ovulation day and I am extremely nauseous. I has thrown up my meal for the last 2 days straight. We are currently trying to conceive and have been for about 5 months now. I don’t want to get my hopes up but could this be a sign of implantation symptoms???? This is the first time since trying that I have been nauseous like this. Please help if anyone has any advise!