Helppp

So I had sex once this month. 2 day of my ovulation week. I was on my nuva (but put it in a day late) and he pulled out. I've had these bubbly feelings in my belly. No sorry breast or cravings or anything. Some light cramping, and clear discharge. I'm usually pretty regular and my period is a day late (according to my calander) opinions ? 9months pp.