Back feels horrible

My back feels awful. I've been losing weight on weight watchers and now my spine and muscle spasms are worse than they have ever been. Granted its likely because I'm not carrying around as much weight but my back should not be hurting this much. Also my muscle spasm medication is super potent. Literally I took 1 Saturday night and passed out on Sunday night (granted I was super tired). I'm just wondering when it'll be over. Little pain, no more muscle spasms nothing.