Is something wrong with me?

Yos

I took off my Nexplanon last November. Since February this year we been without any condoms and just guessing every month if I get pregnant. Its October almost November and nothing.

I'm just starting to get depressed that something isnt right,

Am I just over reacting? And I should give it time?

I'm 28 and I would think I would of been pregnant by now since February,, please reply