miserable about life

Hi. I'm 29 years old. I kept having bladder and kidney infections and finally went to a Urologist. On 7/10/14 I had a stage 1 non-invasive bladder cancer tumor removed. My symptoms were pretty much gone and now they are back full force. I'm laying here with a heating pad hoping the AZO will kick in after I just sat in a scolding hot bath to help my lower back pain and burning in my urethra. (TMI) I go back on 10/24 to have a cystoscope performed to see if the cancer has came back. (There is a 50 % chance). I also found out that I have interstitial cystitis also. My doctor is very cold hearted and basically told me this is something I'm going to have the rest of my life. That I need to learn how to manage my symptoms. After having endomitriosis and a total hysterectomy and now all of this I just feel bitter about life. I know I could have it a lot worse , but I'm so tired of hurting and just want to be normal again. I'm very depressed and cry all the time. Its too the point where it is affecting my marriage and sex life. I never want to go anywhere with my husband and daughter because always hurting or depressed. I just keep thinking why me and what else? Any advice or words of encouragement would be great. I don't have much support family or friend wise. I do go to church but no one I know had been through this or can relate. Thank you.