So today had my 6 week check up

Jenny
And the Dr said everything looks good. I'm hemmorhaging a little but should be okay. She didn't ask anything about how I'm feeling or anything about post partum depression and when she asked me about birth control I said I had thought about the nexplanon and she said I can get it in 6 months. So I made an appointment to get it done. But I need on it sooner than that. Is there a reason why I have to wait 6 months. Or can I go to my regular doctor or the health department and get it done there