Chances of getting pregnant on the pill

[dearboo]

I have been on birth control for 3 years.  I am very good about taking them everyday at the same time.  More recently, I have noticed that my periods have become extremely light and sometimes they won't even come.  I asked my gyno and she explained that the longer a woman is on birth control, the less "blood" she will tend to bleed (I'm sure her answer had some more scientific wording but that's what I took from it).  

The other day, my boyfriend ejaculated inside of me and I'm wondering what my chances of pregnancy are considering I have been on the pill for a long time and that I barely bleed anymore. Do those factors affect my chances? Bad or good?

[SunWorshiper_26]

How much or little you bleed won't change your chances of pregnancy. Your chances are very very slim like less than 1 percent if that of pregnancy. Just keep taking it every day at the same time and you should be fine :)

[fadingsun]

As long as you are taking it as directed, it is about 98 or 99% effective no matter how long you have been on it.  I experienced the same thing with my periods, but not until I stopped taking it after being on it for 13 years.  It then took me about 7 months to become pregnant and about 3 years after that pregnancy for my period to return to a normal flow.