Depression Treatment Care

I’ve been on Prozac for 3 weeks and I’m noticing a relaxed feeling along with normal feelings returning, but the feelings of depression, how long does that take to go away?

I’ve been struggling years but its seems to get worse its affecting all aspects in my life ,now family of 4,husband only income,its becoming tough for medical care ,my question what should i do next i already apply for SSD since august, nothing yet,,I dont know of what im more afraid ,not getting the help that i need or loosing completly my head.

Is it possible?
Any tips, from beyond?