baby could have suffocated!

We got home from visiting with the inlaws for thanksgiving. It was a little After midnight and I still needed a shower so I asked my husband if he could watch the baby while i shower or if he's gonna fall asleep. he says yeah I'm not even tired yet. I was gone for 10 mins in the shower and when I get out I hear the baby screaming like something was wrong. So I rush downstairs to find my husband knocked out sleeping right next to the baby in her car seat n the baby is screaming cuz she wiggled her hat down over her whole face n couldn't breath. I woke my husband up n flipped out on him. He said he didn't realize he fell asleep n didn't even hear her crying. I'm supposed to go back to work in 2 weeks now I'm so scared. How can I trust him to watch our baby when he doesn't wake up to her cries. N doesn't realize he falls asleep. And this happened before around lunch time so it wasn't due to it being late. Wtf am I supposed to do? I can't sleep at night cuz I'm worrying. We can't afford our bills on only 1 income so I have to go back to work. N he won't agree to sending her to full time daycare. Ur he is second shift so he's home during the day while I'm at work