Relationship troubles

Sarah
I am engaged but lately I've noticed a difference in my relationship... I'm not allowed on fb, Instagram, snapchat or any social media.... We are struggling for money but I'm not allowed to get a weekend job... Only he can work and he works in a pub... I'm in university full time and he just ridicules the amount of time I put into it.... I'm studying forensics so it isn't an easy course!! I just feel I'm not allowed to be me even though I'm loyal and dedicated.... I have 3 children already from a previous relationship but he wants us to have a child together.... I really need some advice 😢