No sleep

I feel like I’m never going to sleep again. Almost every time I put my baby in her crib she cries hysterically until I pick her up. When she actually does stay asleep when I put her down, she wakes up crying in less than 45 minutes. I don’t want to let her cry it out and I’m too scared to let her sleep on me when I’m sleeping so I am at a complete loss. She slept so well up until the 4 month regression (which happened at 3 months). Things have been getting worse and worse ever since. Does anyone have any advice or is anyone going through the same thing?