My question

can you get pregnant if he does eject sperm in you but right after you take your birth control?

I think you can. The sperm comes in right then and there and starts working, while if you take pills, it takes a long time for them to kick in, so yeh I think you can get pregnant.

It depends on what kind of pill you've taken, and when. Birth control pills that have a monthly schedule have to be taken regularly and for a while until they work themselves into your cycle and start controlling the hormonal levels. If you've been taking them for a few weeks, then you're probably fine, but if you took the first one right before you had sex, it wouldn't have done anything yet. The other type of pill is the so-called "emergency pill" which you should take up to 24 hours after sex, and which stops you from getting pregnant. If you took this one, you should be fine (failure rate less than 10%).

think abou plan b, its called the day after pill, cause you take it the day after you have sex. its usually for when a condom breaks. bu t dont use this all the time, cause this doesn't always work

No You can not.

Yes you can.

you have to think before you act my dear friend because the more the sperm pops into your then you may get pegnant