tiny chances, with cum in her, and birth control its like a 99.9 percent efficient, but then theres a chance not

It's 99% effective

Yes birth control is 99% effective but iff she only started it a week and a half a go it may not be. For a womans first cycle on the pill she has to take it at the begining, before ovulation for it to kick in. Generally girls are told to use condoms for the first month of taking the pill to make sure it overlaps, although for added safety id say always use one even with the pill. If you didnt cum then again its only a small chance but as you said its still a chance. Just hope this time she isnt and in future if you dont have a condom and your not sure about how effective her methods are, dont do it. It wont kill you

Your chances of her being pregnant is 99% unless she hasn't been taking the pills regularly everyday. Pre-cum can get your pregnant it's a 50 / 50 chance.
pull out method is always not a good method at all, She can end up pregnant that way too.

The birth control isn't working after only a week and a half. Even if you didn't cum in her she can get pregnant and it only takes one time.

Getting pregnant from pre-cum is actually a lot lower than 50/50. Not saying it's totally okay though. Pregnancy can happen if you already ejaculated within the last 24 hours and didn't pee. The acidity of urine can essentially kill them off. So, though it can happen, it's highly unlikely but that doesn't mean the withdrawal method is any more effective.

Also, depending on what kind of pill she's on can determine when it's okay to have sex. Some of them, you have to go through one whole cycle first before it's effective but mine only takes 7 days. Provided that you take them properly, of course.

If you really want some reassurance though, wait a couple weeks or so (or around the time she gets her period but before it usually starts) and have her take a home pregnancy test.

if you think pre-cum could get her pregnant, why did you go without a condom? Dont think she will get pregnant

maybe...dont be dumb put a condom on.

There is ALWAYS a chance.

The pill is 99% effective, usually you should use a condom for the first 7 days you are on the pill and if she is taking it correctly and not taking any other antibiotics she should be protected. When I started taking the pill me and my boyfriend had sex without using a condom the second day I was on it and he came inside me. I never got pregnant from that. I don't think you have anything to worry about really as long as she's taking the pill properly

no matter what ur doin to "prevent" pregnancies, there is ALWAYS, i repeat, ALWAYS a chance

just relax, don't stress out to badly the chances are pretty minimal

As said above, there is always a chance. So no matter how minimal that chance may be I'd suggest you use another form of birth control along with her pills. Next time remember, "Don't be a fool, wrap your tool."

Pre-cum can get your pregnant it's a 50 / 50 chance.

Where the hell did you pull that from?