I’ve been stagnant and my next option is a glp-1

Hi I’m F (27) and I was 24 when I got diagnosed with pcos. I’ve always been extremely active even through the PCOS. I gained 85 pounds during the worst years of PCOS I couldn’t get a doctor to listen or help me. I moved to a different city and I finally had a doctor listen I showed him my workouts how many calories I was burning showed him what I was eating and also show him a food journal where I talked about the food noise. He prescribed me phentermine. I lost 50 pounds on it because I kept up my workouts. But I had to stop bc it gets less effective over time and it’s not always great for your heart to continue. I have lost 5 pounds since getting off it and I’m just so stagnant I want to lose that last 25 but I’m struggling. I went to my doctor and the prescribed contrave but it’s $600+ a month. I didn’t want to glp-1s bc my friend did it and loss 25 in one month and I don’t know if I did it would I lose that much in a month like if I hit my goal weight could I just stop taking it? Is there any health risk for taking it for a short amount of time?
Thank you for listening and helping.