don't know if I'm pregnant.

hello, i'm struggling to know if i am but i was pregnant before back in september and lost the baby in October due to a miscarriage now i'm here in january and my last period i can't remember in around Dec 20 maybe but I'm on the pill and I haven't token it for 3 days because I forget and he had cum but not inside me but after his penis was around my vagina. I'm not sure if I'm pregnant because the cum was around and I wiped it off so I'm really curious if i am and this was 3 days ago. I had stomach pains and my boobs are sore kinda