I had a baby 6 wks ago and im now on my 2nd period since he was born, is this normal?

After having DS my post partum bleed lasted for 21 days, i then had a 1 day break from any bleeding and on day 23 i got my first period back. I know it was my period and not postpartum bleeding starting up again because the colour was very different (alot darker), the smell was different (tmi i know but it was) and so was just all of it, it was exactly like a period and also lasted for 5 days like normal. I also noticed i ovulated 9 to 10 days later.

Yesterday my second period started, 21 days after the first one (normally 28 day cycle) and it seems to me to be quite heavy. So my questions are:

*is it normal to be on ur 2nd period when u only gave birth 6wks 2 days ago?
*should this second period be so heavy since i only had my period 3 wks ago?

Im not sure if its heavier than normal or if this is what its normally like and ive just forgotten so am getting used to it all again. I keep feeling "gushes", its not clotty or anything but yeah, just seems heavier.