I need a lil help

Mariah • Follow me on Instagram 📸@_mariah.carter_ add me on snapchat👻 @mariahcarter50
Ok so Iam 6 days late now and I took 2 tests and the both said not pregnant but I still haven't started yet and idk why I haven't and my boyfriend is still scared and he wants to tell are parents but idk about all that yet p.s. Hes 16 and I'll be 16 in 42 days