Help

Hi guys, looking for some advice please.
My husband has decided to leave the family home
We have 2 children, together aged 3 and 4. He has said that he's going to go to see a solicitor next week.
I'm afraid that he's going to try make me sell the house so he can take his half. I can pay the mortgage and the bills on my own but I won't be able to afford to pay him out. So my question is, can he by law make me put it up for sale and or would he have to wait until the children are of a certain age?!?
If anyone who has any sort of insight into this would be great please. Thankyou.