I know you said you can't pay for gym membership, but something I did was see who was offering any free 1 week offers and go to them! I actually did it for a couple of gyms and it helped me rule out ones I didn't like! One of them actually had a free 2 week gym membership that was really generous of them!
It can't hurt and maybe if it helps with the weight loss it's something to consider for the future.
I feel your pain with being stuck at a weight. I've been in the 170s for MONTHS!!! can't wait to leave. I also *feel* skinnier but I need a number to validate it since measurements haven't changed. Best of luck to you!!

