Mornin Lily,
A yeast infection is not typically a clue that one is pregnant. You got a yeast infection because the antibiotics that you were using killed off the good bacteria in your body, there fore....promoting yeast. The antibiotics don't necessarily cancel out your birth control, it impedes the effectivness of them.
The only way that you will know if you are pregnant is to either take a home test or visit your doctor. That is why your doctor ahould have told you to use a backup birth control, i.e. condoms, while taking your antibiotics.
If you two are ready for a baby, come off your bc all together.
My body just feels different, today i got alot of heartburn, and I never get heartburn. I cant eat much, I have constant cramping in my left abdomen.. I think I am pregnant for sure, I've never felt these changes before.. Even my fiance has been acting all emotional these past weeks, and eating so much and getting cravings, almost like sympathetic pregnancy lol I don't know, I think this might be it!