my ex and i have been separated for 3 years now and he is making my life hell, he will not be reasonable about anything, our son is now 5 and he is with me full time his dad only has him 3 weekends a month, we have a prearranged schedule that was set out in Jan for the rest of the year that we both agreed to, now he is refusing to stick to this schedule because he has a girlfriend he wants to see, i have planned my whole year out around these dates and can not change these as it effects a house move and my sons schooling as well as many other things ie doctors appointments as im expecting my second child with my new partner. but my ex is saying he will just refuse to collect my son on the prearranged date and juts take him from school on the days he wants him, the school have said they can not stop a parent from taking their child so i feel like i can not stop him. it is really stressing me out, and i am already apprehensive about him having him as iv recently found out that he is letting my 5yr old go out to play by himself unsupervised , this is definitely something i am not ok with, but as i am not there i cant stop him. and as there is no law about how old a child can be to go out alone my ex is just ignoring my concerns. he is holding me hostage to a marriage i no longer want by refusing to sign the divorce paperwork, and using it as a threat ie " if u want this divorce you will give me what i want". i am usually a very reasonable person but i am not prepared to run my life around this selfish man. it is causing me a huge amount of stress and at 34 weeks pregnant that's honestly the last thing i need. what can i do to prevent him basically doing whatever the hell he wants this is not fair or reasonable.