Next birth control?

I’ve been on depo for about a month and 2 weeks now and I have not once stopped bleeding. I got the shot on the 3rd day of my period. I have a feeling that I won’t ever stop bleeding until it’s fully out of me. So I don’t plan on getting a second shot🙄 but I need some form of bc. The pill is out the question so now I’m thinking about the implant. What do you guys think? Should I wait before getting something new or get it immediately after my 3 months with depo is up?