I Have Had Pmma Bioplasty Inserted in my Butt?

Unfortunately you have joined the many misled patients about the outcome and safety of buttock injections for augmentation.  The most important thing now is to get completely healed then consult with a board certified plastic surgeon (and member of the American Society of Plastic Surgeons) who specializes in buttock augmentation.  S/he will be able to evaluate your buttock anatomy at that time and provide you with reasonable expectations moving forward.  Glad to help... @drryanstanton.com

Once you have healed, you need to be evaluated for reconstruction, possibly with fat grafting.Find
a board certified plastic surgeon who performs hundreds of
Brazilian buttlifts each year. Then look at the plastic surgeon's
website before and after photo galleries to get a sense of who can
deliver the results. Kenneth Hughes, MDLos Angeles, CA

In Mexico because PMMA is only approved for facial use, where small quantities are used.

Unfortunately it is an unlikely expectation to return to your pre-treatment appearance. Once the wounds are all healed and after a 3 to six month delay to allow all the inflammation to resolve, see a plastic surgeon who can advise you on what can be done to improve your appearance. All the best.