Nexplanon issues

Hannah
Okay so I have the Nexplanon implant in my arm. I've had it in for five almost six months now and I've had a period every month until this month. Me and my boyfriend have been having unprotected sex and he's cum inside me. I've been extremely nasueous and exhausted recently and I can't keep much down. I heard from people that some women have gotten pregnant on it but most had miscarriages. So I looked into it a bit and I've seen things about women not being able to conceive or having miscarriages after having the implant, shot, or the vaginal birth controls taken out. I'm just worried and I'm not sure what to do I could really use some help or advice.