Male cold and breastfeeding troubles

My last pregnancy, I had no problems breastfeeding. This time, my supply just doesn’t seem to be enough sometimes and she has a bit of an issue latching. But I also had some retained placenta and I’ve read it can factor into your supply.

On top of that, my husband has the male cold. I’m trying REALLY hard not to bite his head off. He acts like just standing up is going to make him faint.

I feel like I’m going to go insane!

Does anyone have any recommendations to increase milk supply or have any experience with retained placenta??