Please no.

FTM and I need some reassurance. I'm 6wks postpartum and I've notice a bit of light pink on tissue when I pee today. I've been breastfeeding with hardly any supplementation or pumping. I've notice she has been feeding longer and longer and more crankier these past few days. I decided to just now pump to see if I'm producing enough. It was almost two hours since she nursed and since she nurses about every 2 1/2 hours I should have milk. Well I just pumped and only got 80ML TOTAL. Last wk when I had to pump for my husband to take care of her while I was at my appointment I easy got 4-6OZ. She is a chunky baby and easily eats 3-4oz when my husband feeds her. 
Does the light pink mean my period is coming bc my milk is drying up? Or is it possible to have a period while breastfeeding? I can't dry up. I'm praying to God that it doesn't happen. I'm scared. And worried that I've been starving her these past few days if my production has decreased.