Help please, I'm 16 and I think I might be pregant

Hello, I'm 16 and I think im pregant becasue I havent had my period for like almost 4 months. I was just on birth control and my last period was September 27 or the 29 can't remember the exact day. And now it is Januray 19. The only thing is my boyfriend never came in me, and i know that for a fact because he doesnt want me pregant eaither. I have never had morning sickness, my boobs have gotten a little bigger but that could be because of the weight gain. I get the odd headaches here or there, im alot more moody, and i also had odd food cravings. we are going to go get the test today, my mom already told me if i am pregant that shes sending me to my boyfriends. so i have no help there, if i am pregant i kinda wanna keep it but i know i shouldnt. i looked on the internet and it said such things as you period could be delayed 2 or 3 months if you are just getting off the pill but i don't know what to think. and i am soo scared and i just need someone to tell me if its normal to not have morning sickness and if a could be pregant. is it possible to get pregant of pre-cum? because that is the only was i could be pregant. Thanks