Hoping I am right!

Hey! Me and my fiancé BD on 2/6 2/7 , then around February 17 I had my period , but it was light, super light and just pink color not red like a period, I didn't even need a tampon because it only came out when I went to the bathroom. It's now 3/3 and I'm feeling nausea in the morning and night. But no sore BBS , also just very tiered.