Umm, as far as positions, you are likely to get pregnant in any of them. You will be safer after one month of being on the pill, but will not be 99.9% safe until after three straight months of taking the pill faithfully at the same time every day. And you will never be 100% protected with the pill. My advice is if you are not ready for a baby then, use condoms anyway as a back up method.
You may be pregnant, but I dunno. Maybe take a test to make sure. Good luck.

i don't know where you got the information about waiting three months, but I think you are confused. I have started birth control four times with four different doctors, and every time I was told that they begin to work after a week if you do the sunday start for the birth control (and immediately if you do the same day start) -- it has to do with a woman's cycle.

Also, if you read the website for the specific pill you are on, they advise when the pill becomes fully effective and every one I have been to says what my doctors have told me. If this were not the case, the companies would not post it -- it is illegal to give/publish false medical advice.

You might be confused because it takes 3 months for your body to fully adjust to the pill (i.E., for side effects to subside), but as far as contraception purposes go, I think it is safe to say you are protected by the end of the first month (although personally, I would wait until a month had passed, even though I have been told after a week works... Just to be safe).

No, i'm not confused, but thanks. Yes, the websites will all tell you seven days, a week, or whatever, but straight out of my doctor's mouth, it isn't fully effective for the three months that it takes your body to adjust to it. I think i'll listen to my doctor on that one.
Yeah, it is illegal to publish anything false, medical or otherwise, but it happens all of the time, and there is nothing anyone can do about it. I am sure bc is effective after the first week if taken correctly (for most people) but when the doctor tells you to wait the three months...I think i'll listen to the person with the medical degree. And even after the three months or however long you wait, it is only 99% effective if taken 100% correctly and if your body doesn't reject it, not on antibiotics, etc. So, if you don't want babies you should always use condoms too.
This post is over a year old, why is it being brought back up now?