What you are experiencing is very common. You’ve been going through a lot. The surgery, the change in your diet, pain & discomfort. So much new information & things to learn. Perfectly understandable that you’re questioning if it will be worth it. Plus your hormones are all over the place making you more emotional.
It just takes time. Time to heal & recover. Time for your hormones to settle. Time to become familiar & more confident about the changes to your eating, etc. Take as much time as you need. One day you’ll realise you are feeling a lot better, stronger & confident about everything. Your weight will be decreasing. And you’ll realise yes, it was worth it.
All the best.