am I or am I not pregnant

Abbie • 🇬🇧🇦🇺
Had unprotected sex while on the pill (he didn't ejeculate inside of me, I'm aware about precome) in late November, and got my period in December on expected day, it lasted the normal five days, contained clots (small and large) and was the same heaviness as usual, then again I got my period for January and that lasted normal length and was normal heaviness. 
I have not had any symptoms such as constant peeing, sore/larger breasts, constipation, sickness except I feel nauseous every time I think about the possibility and I've had on and off bloating for the past week 
What's the chances that I'm pregnant :/