I’ve agreed to look after my sisters son (my nephew) whilst he’s not at school in a weeks time. I’m 37 weeks pregnant today and by this point I’ll be 38 weeks. I’m starting to really struggle now it’s the end of my pregnancy and I am really regretting agreeing to look after him. But on the other hand, I’d feel so bad for letting her down. I don’t know what to do. I’m loosing sleep thinking about this!