Abuse in the work place

I was working there for 5 years of my life ..got promoted to a new store to work under a power hungry first time manager yoh made my life hell. I canvassed there 8 months pregnant on rainy days now that I'm dismissed they telling me I won't get my last payment cause it went to a maternity loan I wasn't even aware . They make you sign documents in believe it's your maternity leave documents when you hanging yourself.