Lost virginity, on bc pills, but scared of precum

So im 17, and i lost my virginity 3 days ago. (I am on birth control and have been for quite some time). I am very nervous and do not know what to think. I had a bootcamp to go to, and i didn't want my period to ruin anything. So i got the OK from my doctor to skip my period that month and take the next pack right away. (After the 2 months i took sugar pills, got my period. And i am on the next pack). So from not getting my period for so long my breats started to hurt. Thats normal i heard. Ok back to the point, when i lost my virginity it was one day after my period ended. And when we were messing around it seemed like he had some pre-cumm on his penis. He only stuck the tip in. Then he stopped and put on a condom. Its been 3 days now. And im on the 5th pill in on my next pack after my period. And my breasts hurt a bit. Like before. And i have lower abdominal pains. And feel a bit bloated. I heard this is normal (the bloating). And i am gassy. But i am very nervous, and scared that i could be pregnant. He only stuck the tip in. And the birth control should help. But my breasts hurt again. Maybe from the pill, or when i work out i use a very tight sports bra. Im not sure, but im freaking out. My next GYN appointment is next month. I really need opinions. (By the way, my boyfriend is a good 7-8 inches. He put it all the way in my first time,with a condom and he said i was tight, may be because of that. Im 5'2 and weigh 115lbs). Any feedback will help! Thanks in advance. But please don't make me feel like c**p about myself.