Provera/AF question

A
So my doctor prescribed Provera. 10 days per month only starting on cycle day 16 (if you don't have a cycle you just start on a Sunday). I took it in September for all 10 days and got a period 3 days after my last pill. I didn't take it last month because I had just started exercising and I wanted to see if I would get a natural one for October. I didn't. So two weeks ago I figured I'd take a Provera cycle for November but I only took it for two days and I forgot about it. I started a period on 11/13 and I'm just curious as to whether you guys think it was the 2 days of Provera that caused it, or if it sounds like a natural cycle. I'm not actively TTC just yet but I'm curious!