To just move in?

[GardenGnomes]

Sorry if this isn't the right section but I really need some advice.
I had a baby last June and me and my little boy's dad split up at the end of last year. We get on okay now but didn't when we first split.
I've been staying with my mum and sister since me and me ex split. It's been okay, if a little cramped (2 bedroom house with 3 adults, baby, 2 dogs and a cat!) until recently.
My sister has severe mental health issues. Until recently she's controlled it a bit but in the past week she's had two meltdowns. This morning she's got very upset (screaming, crying, banging, throwing things - not in the same room as me and baby) because I fed my son chicken (she a vegan).
I'm so worried about my little boy. I know she won't hurt him but he can hear all that's going on.

I don't have anywhere else to go. I have no friends and no family that have space for us.
Me and my ex had just bought a house together. We have joint ownership. He doesn't know about how bad it's been here because I'm scared he'd try and get custody of our son.
Do I have any rights when it comes to the house? My ex wants to sell it but could I just move in and refuse to leave? Please help ☹️

Move in and apply for uc

Please don't rely just on cab, they will have a waiting list. Good for benefits, but you can just make a claim immediately.
See a lawyer, a solicitor who can advise your legal rights about the house, parental responsibility/contact and residence for your child.
You should be in the same situation as if he had moved in to the house with you and left. I don't understand why you didn't move in without him. Your mortgage could be tiny if you deal with it correctly. Negotiate with him of course but know what you are entitled to.

GardenGnomes

I still think that you need to see a professional about this, some have free half hour sessions.

But it seems to me from what you have written that if you move in, you will be reliant on him for paying all of the bills until you sort yourself out.

If you talk to him, he may continue to pay the bills for some agreed amount of time, but if you just move in he could just stop.

For all the talk of courts (I have done it as well) and benefits they take time to come through, and you will be needing the support (money) from someone.

there is the possibility of going onto interest only mortgage payments for a year or two, which would reduce monthly costs
Op says the mortgage was based on exs salary, there is almost no chance a bank would change the mortgage with only a single non working parent living in the property.

Also having thought about it I cant see how the ex would ever let op move into the house with him on the mortgage because it would mean he would never get a second mortgage to buy a place for himself. So I think he would definitely take drastic action to stop this happening.

Op, in regards to the working situation, could you find a part time evening job where by ex partner comes over (to empty house if you move in there with his agreement) and spends time with his child for maybe a 3-4hr shift while you work?