Pregnancy test questions

1) doctor told me I could be pregnant but to wait a week and take a test. I took one today and I called yesterday silly me I know I didn't wait the time but if I was I'd be 3 weeks. Most tests don't detach it til 4 weeks. So did I test too soon?

2) she told me to get off my birth control because I could be pregnant but that if I didn't bleed going off of it then I most likely was pregnant and that my hormones maybe off balance. Should I get my hopes up?

3) she said if I didn't bleed and wasn't pregnant then there was still something wrong to make an appointment that I could be carrying a baby and not know it due to being on birth control and missing a few pills it may have set my cycle off track. I'm freaked out and really just want some advice!!!!

Thanks in advice.