Hi Eri,
I didn't have problems for surgery, but after was a nightmare... Pain was dreadful, and I too really really regretted my decision to have the band. I must admit for two to three weeks after I really just wished I hadn't done it.
I am now 9 weeks post op and have had problems with my band but I guess it took me such a long time to make this decision to have the band I am slowely working through it. Perhaps try and look forward and remember why you wanted the band in the first place. We are all here on the same journey, some a little rockier than others but keep focused on the main goal. You will get better, be positive.
I wish you all the best and you will find once you start losing weight it will not be a decision you regret.