Nexplanon since april 12

JJ

i’ve been on nexplanon since april 12th no bleeding just crazy moods. me and my bf have had a lot of unprotected sex. (we waited 2 weeks after i got it) and idk if i’m paranoid or what, i feel like i look pregnant like how you look when you’re bloating ? i felt nauseous last week 2 times and idk why. i know it’s 99.9% but i’m scared.