Okay momma I need your help

My daughter is 8 weeks old and recently she started to spit up more to the point it seems like she is spitting everything she has eat. I am reaching out for help to reduce the amount of spit up. I am only breastfeeding directly. Please help this desperate momma.

Also she’s had a horribly rash I have nearly tried everything. Aquaphor, Burt’s Bees, butt paste, desitin, A&D. I took her to get checked out cause her little bum has blisters and they gave me a prescription but it didn’t help at all. I already leave her with out a diaper to air out. I won’t use pampers swaddlers and pampers aqua wipes.

I need your help with this also