Husband back to work

Ftm...this sounds soooo silly but I'm so anxious about my hubby going back to work and being home alone with a 5 week old. I feel like I have no idea how to function w her alone. Simple things like eating meals, showering, getting anything done in the house....seems impossible. I'm terrified of her screaming and not being able to calm her myself...I just feel like I have no idea what to do all day!!! Besides cry and countdown the hours until he comes home. Then I feel guilty for feeling this way bc its not that I'm scared of her or don't wanna be around her....I'm just doubting myself I guess....any tips?????