Still bleeding 7weeks after c section

I had my baby via c section on November 19,2017 and I am still bleeding. It’s not necessary a heavy bleed but enough to keep wearing a pad. At my 6 week appointment with my Obgyn she said if it continues for 2 more weeks let her know and they’ll do an ultrasound. I feel fine just a bit of cramping here and there(like period cramps/breastfeeding cramps). I started working out at 6 1/2 weeks after because she said I was good to go. Now this is my second baby but the first I had vaginally and didn’t bleed this long. I had no complications this time around and I was actually released early because I was doing so well. I still take prenatal vitamins and eat fairly healthy. Is this bleeding something you think I should worry about? Should I give it more time? I don’t want to overreact to something that’s not a big deal but I don’t know if it’s a big deal. I don’t think bleeding this long is very healthy for anyone but I really do feel good. Any suggestions? I am currently 7 weeks and a day since my c section. Has this happened to anyone else, if so what’s you do?