unglued94ta

So my car blows cold air as long as I'm driving. I've noticed in the last month that if I stop moving the air quickly goes warm. I bought a couple cans of recharge refrigerant but they won't take. In fact when the compressor kicks on, it feels like it takes just a bit and the can, that should be getting cooler, gets warmer. Yes I'm on the low side. Any ideas? Thanks for the help.

i'm brand new myself to this forum but i can say have fun changing the oil filter.