As you can see, from all of the posters above who shared their story, your hope is no wear NEAR gone. As you have been medicated and your grades are improving, i am sure that whatever university you choose to apply to after the community college hurdle, will value that. You are not too old, and you wont be too old > my 40 year old friend just got into graduate school. In 3 years , my 42 year old friend will be applying......if it is a dream , you should chase it till you are 10000.
Dont give up! Its very hard to get depressed when you look too much into the future. Stay focused on your goals RIGHT NOW> Take it one step at a time.
You obviously have a huge hurdle with your disability, and you have acknowledged it. You have even found medication that works! So, stay on it, find some professional help,keep your chin up, and just keeepppppp goingggg. YOur life is too precious to let go off.