period after C section

Cy
Any other mamas get their period soon after having a c section? I'm 5 weeks PP this coming Thursday and this is the heaviest AF I've ever had! Good grief! lol I am going to call my doctor tmrw just to be safe. I'm an ftm and don't know what's normal. How soon did you mamas get it? Also I am pumping ever so often but not round the clock. My baby was in the NICU for 18 days so he got used to bottles :) I was not due until Feb 23rd and he came January 12th at 34 weeks on the dot!