Had a hysterectomy in 2002 and left only my overies left. now pain in lower back on both sides and now got vaginal bleeding should i be concerned?

Back pain: There are too many causes of low back pain to list here but a primary care doctor can help you organize the evaluation. An obgyn can examine your vagina. If you not longer have a uterus then it is important to confirm where the blood is coming from. Blood could be coming from the bladder or rectum

Absolutely: If your cervix was also removed then there should not be any vaginal bleeding whatsoever .If the cervix was left as in a sub-total hysterectomy then there is still cause for concern about residual endometrial tissue. See your GYN immediately for re-evaluation and have the ovaries status rechecked as well,.

Blood in urine?: Are you having blood in the urine? Fever? It is unusual to bleed after hysterectomy so I would recommend you see a urogynecologist or start with your gynecologist for exam. Could be bleeding from the vagina, or from ureters leading from the kidneys.