QuestionMy boyfriend and I had unprotected sex yesterday and the day before, but he pulled out way before it was time for him to cum. I was wondering, is there anyway I could become pregnant?
Since I happen to personally know of three couples who became pregnant in just this way, the answer is obviously "yes." For two of them, I know it happened on their very first time of his penis being in her. Any time sex occurs, there is a possibility that pregnancy can happen. It doesn't matter whether he ejaculated inside you or not. All that changes is the odds of it happening. You might never get struck by lightening, but it would be foolish to state that it would never happen to you.
When a married couple are actively having sex, trying to conceive a child, the standard odds are that 85 out of 100 couples will have conceived a child in one year's time. This doesn't say how long it took. It is like rolling a dice looking for a "six" to appear. It could happen on first throw or it might take twenty throws, but the odds are that a six will appear 1 out of 6 throws (or 17 out of 100 throws). In essence, each time a couple engage in sex, the "dice" is being thrown whether pregnancy will take place. In general there is an 85% chance that sex will lead to a conception. It might happen the first time, or it might happen after twenty times, but the odds of it happening remains the same.
When married couples practice the withdrawal method to avoid pregnancy, that is for the husband to remove his penis before he ejaculates, then the odds change to 19 out of 100 coupes will conceive a child in one year's time. While quite a bit less, you can see that it isn't close to zero. In fact, it is close to the odds of rolling a single number with the roll of a single die.
If you were having sex between your periods, then the likelihood is a bit higher. A woman releases an egg two weeks prior to her next blood flow. A man's sperm can survive up to six days inside a woman. While a man ejaculates about a half-billion sperm each time he has sex, that many sperm just increases the odds that pregnancy will happen. Technically it only takes one sperm to fertilize an egg.
Like girls, guys produce a clear liquid when they get sexually aroused which drips from the end of their penis. That liquid is called pre-ejaculate or in slang it is called pre-cum. That liquid can contain a few sperm. Add to the fact that he had his penis inside you means that some of that liquid was deposited near your cervix, which just increases the odds that a healthy sperm could reach your uterus and from there the fallopian tubes to meet up with an egg (which, by the way, only takes about 20 minutes of travel time).
I would like you to read two articles "Waiting for the Proper Time" and "Why Sex Outside of Marriage is Wrong." At the moment your boyfriend is treating you much like a prostitute, only he is not paying you for the sex he is having. If you were truly concerned about becoming pregnant, then you shouldn't be playing around with sex.
Of course, pregnancy is just one concern. Pre-ejaculate can also contain diseases if he picked any up from other girls he has been having sex with. Since the skin of the vagina and the skin of the penis are very thin, some diseases, such as HPV (genital warts), can very easily be passed. That is why the Bible warns, "Whoever commits adultery with a woman lacks understanding; he who does so destroys his own soul. Wounds and dishonor he will get, and his reproach will not be wiped away" (Proverbs 6:32-33). The odds of picking up a disease from a sexual partner is far higher than the odds of becoming pregnant.
God stated that sex was for married couples and He made that law for very good reasons. You ought to listen to your God.