so a couple days ago i had sex for the first time and im only 15, and im really scared that i might b pregnet. my friends are telling me not to worry so much, but i just cant help it,im so scared, and my boyfriend used a condom just not both times,which this didnt last long either, and he said he wipped the precum off before he put it in me and he took it out way bfore he had sperm come out. but im still scared that i could be pregnet cause i feel sick to my stomach after 2 days? is that uncommon to feel that way?or is it the first time gitters?

and here is another

if my boyfriend rubbed lotion on his penis, then tried to make it fit in me(because i was to tight), and then put the condom back on, would i have a chance of being pregnet?