TMI ovulation

Abby

I need advice. So my last period only lasted from November 29- December the 2. Me and my husband tried on the 8th and 10th.(we barely have time to try) Then on the 11th I was getting very light headed and nauseous (which is Never normal for me). But the feelings went away in 3 days. I haven’t experience anything since. I tried taking pregnancy test but they came back negative I guess since I’m not very far along. Do y’all think I might be pregnant we have been trying for 4 months now. I’ve started to give up