Nervous new mother

Just had baby a few days ago and unfortunately my husband got what it seems like the plague that day. Hes had a fever of 39.5 since she's been born. I guess he caught something while his immune system was shot from no sleep durin. My pre labour? Anyways! He's been sleeping in a separate room to not get me and baby sick with whatever he has but it's starting to get overwhelming... I thought we would share some of the responsibilities and now I'm sleeping on my own, terrified I'm going to sleep instead of waking baby up throughout the night to feed her... Is anyone else nervous? I have alarms set but I'm scared I'll sleep through them and I was told to wake her up every 3-4 hours for a feeding! Most mothers are telling me their babies woke up themselves and cried when they were hungry but mine doesn't :( I'm tired, and overwhelmed. Advice? Encouragement?