Ohhhhhh Summer I am so sorry you are having a shitty time. (I am FA, you were there when I was having my baby!)
DH sounds really unhelpful and I am sorry about the train strike. That is very bad luck. I am sending you a BIGGGG cuddle for you and your little ones XXX
Is there any way you might be able to move somewhere else to carry on with your childminding project?