Seperating

My husband randomly told me he wanted a divorce ... we agreed on a seperation after talking he wont give me a reason besides he wants space and to be alone were going on 4 years married next month he wanted sex today and i told him i wasnt having sex with him until i knew i wouldnt be homeless he put me in such a hard situation and i could possibly become homeless im only 22 and could loose botth my jobs all he said was that im annoying and he needs space he got so mad that i told him i wasnt having sex with him we lost a baby in February our second loss i get hes hurt but its not my fault ..... so we are seperating im heartbroken and i hope it doesnt lead to a divorce i still want to fight for us .... i cant just let go ....... weve been together for 7 years i mean we have our ups and downs but this is just too much and he jokes about it its not a damn joke its not funny its killing me inside