Confused...

Ash

So I have been trying to get pregnant and due to birth control ect. Its gonna be delayed since the type of birth control I had takes time to get out of your system (Nextplant) today marks the third day of me feeling flutters and jabs as if I were about 12-14 weeks pregnant. I have taken numerous pregnancy test even at the clinic all came back negative. Idk how to ask for an ultrasound to confirm without sounding crazy since all test came back negative. I have video proof that u can see something kicking up at me around my pelvic area