im not too sure but i think she should see a doctor asap
positive hpt's dont lie
however negatives can be wrong sometimes
she should go get a bloodtest done

i hope erything is ok

I'm not sure what the BC pills do to a pregnancy. I'm sure not good. But you can still bleed during pregnancy. I would see a doctor ASAP! should have when she got a test

She should see the doctor ASAP to have a blood test and ultrasound and to be sure she is not pregnant.

However, birth control pills can have a bad reaction in some women and cause pregnancy symptoms. This was the case with me. I did fine on the pill for years, then suddenly, my body just had it. I started having a ton of water retention in my feet, legs & hands (weight went up almost 20 lb. in 1 month due to retaining water), the area over my uterus got hard and bulgy, exactly the way it looks now that I am almost 6 months pregnant, my breasts got huge, I had crazy mood swings & anxiety, I started craving foods (especially milk, which I normally dislike the taste of). All that, and I wasn't pregnant, it was just my body's reaction to the pill.

I actually had a ton more symptoms on birth control pills than I have now that I actually AM pregnant!

How far along would she have been? It could have been a chemical pregnancy. How long did she think she was pregnant?

She needs to see a doctor for a specific diagnosis. It sounds to me like her hormones are off. Negative pregnancy tests are pretty conclusive that she is not pregnant.