It is possible to have a surgical revision, but you would have to consult with your surgeon to find out specifically what they would do. I can think of only one possible way to correct this. This is to make the vaginal opening lower by partially opening the area between the current vaginal opening and the anus. Repositioning the urethra and clitoris may also be possible. A good surgeon who specializes in this type of surgery may be able to give you more options.
Revisions are more common than many people may think and it is not always the fault of the surgeon. Since we are all different and unique, our anatomy may also be different from most other people. Even though surgical procedures are very common now a days, there is always a unique starting point that falls outside of the normal and may result in unexpected complications.
There are Plastic surgeons who specialize in vaginal rejuvenation for middle aged and older women, where the labia major and minor are reshaped. In the most serious condition of a vaginal prolapse, this can also be helped somewhat, but the results do not always return the patient to a youthful and functional vagina.
When it comes to complications, we hope for the best and, of course, YMMV. I wish I could give you a better report, but there are just too many factors involved here. Start with making inquires to surgeons and then schedule an appointment for a consult. This is the only way you can fix this problem.