20 years old and still wet the bed! No hurtful comments.?

I am 20 years old and still in pull ups (or diapers). I have gone to a urologist and she said that she could not find anything physically wrong with me. BUT she did say that my constipation could be what is making me wet the bed. So she told me to take laxatives - I am now regular (I think) - at least one toilet visit every 2-3 days. I have the done keigeal exercises - no problem there.I have tried medican: Corn Silk (worked for 5 months then stopped working, I kept increasing the dose until I was taking the maximum per night) TTPD or somthing like that prescribed from the doctor (worked but stopped working plus very bad side effects while taking it) I have tried bed wetting alarms, thy do not wake me up. I have tried setting my alarm, that does not work. What other options do I have left, I feel like I don t have any?