I had emergency appendix. A month later I found out that the doctor only removed fragments and had another emergency surgery for appendix

I recommend that you promptly contact a medical malpractice plaintiffs' lawyer who practices in your area.  For help with your search, please follow the link below to the website of the Texas Board of Legal Specialization.  The specialty for you to search is Personal Injury Trial.  The list of names you find will include both plaintiffs' and defense lawyers.  To learn which ones are plaintiffs' lawyers, you'll need to visit the websites of the listed lawyers. Good luck. www.tbls.org