Can you put my mind at rest. So some context~ I am a 19 year old girl who just lost her virginity four days ago, we used a condom and I saw him take it off and tie it up so I don't know why I'm worried about that also last night the condom fell off but he didn't come I don't think . I know it's stupid and I'm not going to sleep with him again but right now I'm on day 15 of my cycle and in the middle of my fertile window so I'm like permanently worried of being pregnant . I've gotten birth control but can't take the morning after pill because of pre existing conditions