Arm implant showing through skin?

I got the nexplanon implant in my arm about 3 weeks ago, the incision is all healed and I kept the bandages on for the time my doctor said (24hrs) but it’s recently been bugging me because there’s a little bump where the end of the implant is that seems to be kind of poking thru my skin? Not completely out of my skin or anything, but it does look weird and I’m just curious if anyone else has had this problem or f it’s inserted incorrectly or if anyone may have any explanation for it. I have had sex multiple times without protection since getting the implant in, after waiting the 7 days of course. I just want to make sure it’s in correctly and that I don’t get pregnant. Any help would help. Thanks !