Nauseous after ovulation and fertile window is open??

Nini • TTC
I've been nauseous for 3 days now and my fiancé and I are TTC, we had sexual inercouse on the 4th and again on the 5th and now i feel nauseous. For example my job had a meeting and they bought us food which was moes and the smell made me so nauseous I couldn't even eat. So I'm really confused and I would like to know similar experience or opinions. I think it's too early for a test so I will take it hopefully Christmas <a href="">Eve</a>.