Period every two weeks?

I had my baby on Christmas Day last year, so, I’m 11m post partum. The last 3 months, I have had a period every two weeks. The first month and a half of that, the second week was mainly spotting. But 4 weeks ago, it was heavier than spotting to where I had to wear a pad, and two weeks ago, was like a normal period, but this week, it’s been like a light period and I’m having to not only wear a pad, but change it frequently.

My cycles before having baby, and for a couple months after my periods started back up, we’re between 30 and 48 days long. They’ve never been shorter than 27 days cycles. I’ve heard of ovulation bleeding, and I’ve had that before but this is a lot of blood to be that. I’ve been trying to call my drs office but no one is answering. ☹️ I’m just wondering if anyone has experienced the same thing and what it ended up being?