Okay so I have a question has any other mama ever been pregnant and didn't know, like a cryptic…

Okay so I have a question has any other mama ever been pregnant and didn't know, like a cryptic pregnancy? I know this sounds crazy but I've been on nexaplanon since August of 2016 I got a period pretty much every month up until June of this year (yes I know it can stop your periods but that's 10 months normal and all of a sudden nothing) I've done pregnancy tests all negative

I constantly feel movement daily and I tried to use my Doppler at home (haha) just for fun and nothing to strange, I'm having headaches, nosebleeds, weight gain, urinating more, fatigue, irritability, higher sex drive (sorry if that's tmi) im to hot or to cold and I just feel weird

I'm also a bigger girl and heard if your BMI is to high it may affect the implant, also I haven't had sex without pulling out although I know there's still a chance I just don't know if that helps, any advice or stories ?