Sorry...i know this is a pregnancy app but just feeling upset...

Me and my soon to ex husband have been seperated since December 15. We have two kids together and 6 months pregnant. I have been a SAHM since the birth of my two yr old . He left me and my kids to go live with his aunt...leaving us with absolutely nothing. We had to pack up our lives snd move into my parents..who i have to depend on my for help with my kids so i can work full time to support us. Their father hasn't bothered to help me with anything for the past 4 months. He wants to the kids but only when its convenient for him...and mind you its only once a month. Ive already filed for child support but who knows how long that procesd takes. Is it wrong for me to tell him he can see the kids when he starts taking responsibilities for them. I want him to at least help me out with diapers and so forth.