Is this PPH?

Meara

I had a c section and had a hemorrhage and had to receive a blood transfusion while in the hospital. I am now about 8-9 weeks pp and had my first period 2 weeks ago and right after received the depo shot. Now I am having what I believe is another period and I’m having bad cramping and bleeding through a tampon+ a pad every hour. What should I do, could this be pph or am I probably just having a very heavy cycle?