Late!

Hello!

First time posting..

I am 12 days late for my period, which has been regular since the beginning.

My partner and I have taken precautions and birth control so I don’t know what’s going on.. I’ve taken 4 home pregnancy tests all of which have come back negative.

I plan on going to the doctor in the next day or two...but I was just wondering if this has happened to any of you and you’ve ended up pregnant? Or if you have had a similar experience? Also, if there’s anything specific I should ask my doctor at my appointment? Thank you!