What Is Causing Sharp Pain In Lower Abdomen And Lower Back?

hi, I had a surgery for endometriosis in December but I have fibroids in my uterus.I get constant sharp pain in my lower abdomen and lower back pain.I also get heavyness down under.My urine is also very slow.Can you advise whats causing this.My age is 43years.I am 70kg and height is 156cm.I have cholestrol problem.I just get tired ,energy level drops.After my surgery I still dont feel well.