My 4 week old has colic & constipation & won't be put down. He's screaming in pain. I've done baby massage & everything. His prescription is stuck in the post because of the Royal Mail strike. What do you do if you're too tired to look after the baby and nobody can help? I'm a single mum, my parents can only visit a few times a week. I've only got 45 minutes sleep since Tuesday. I'm scared I'm going to pass out carrying him or fall asleep cuddling & suffocate him. I haven't had time to eat properly either. I feel so weak physically. What do I do?