Looking for some advice

My husband and I are in a sort of a pickle. We both work, and we're finding that after putting $1000 into daycare a month and insurance that I am actually bacsically paying to work. I'm so stressed about it that my milk supply is going down, more than it already was since I started working. I talked to my boss and he offered a decent raise but when we looked at it it just broke us even almost. I'll bring home $100 a month but that'll go to gas to get to work :( 
I have no idea what to do. My husband suggested he leave his stable, good paying job to find a second shift job that's a $5 an hour pay cut but then with the daycare cost going down it evens out after his pay cut so it's not much different. 
I've considered staying home with my son and nursing him (he's 4 months old) and going to school online. Any advice please? 
Edit: I have no retirement of any kind at this employer and we only get health insurance we're not eligible for dental or vision.