Period related issues with PCOS

I am 25 I have pcos. I’m lucky if I get 2/3 periods per year, so at end of 2019 my gp put me on provera ,which I should take for 5days every 3/4months. I’ve been fine on this up till now. I started my withdrawal bleed 7 days ago it started light like usual for me and then on day 3 got heavy which is also normal for me then on day 5 I usually get lighter and finished on either day 6-7. so I thought it would do this again but it hasn’t I’ve been heavy from day 3 and it’s now day 7 and now I’m not only heavy I’m also experiencing clots (which I have had before but this was before I was put on provera and one of the main reasons as i was experiencing painful periods whenever I did have one)

In short I’m on day 7 I’m changing my pads (which I’ve had to double up on) every 2-3hours. I have clots and I’m incredibly sore and feel tired. Can anyone give me advice on how to feel better or what I can do or take for the pain and how long I should let it continue without speaking to a gp?

Thank you💕