Bleeding inconsistently

Okay, so, I’ve got the implant, had it since May 2nd 2017, and I’m on a contraception pill also (implant to stop me getting pregnant, and pill to keep my periods a little more normal) started taking the pill on the 27th October 2017. I’ve recently started going to the gym, about 3 times a week, and almost every time I seem to bleed afterwards! The bleeding lasts anywhere between 1 hour-1 day. Also it’s happened a few times in the past, but recently I’ve also started bleeding after sex a lot more frequently, pretty much after every time, the bleeding lasts anywhere from a few hours to 2 days. I’ve tried googling it of course, bleeding after the gym, it said can be due to a change in hormones from frequent working out, the bleeding after sex can be due to infections

Has anyone had anything like this?

I have booked a doctors appointment, but that’s about a month away.