I think it will take some time for the forms to get to your doctors, they fill them out and send in the info and then the SS evaluates and gets back to you with an appointment/no need for an appointment with their doctor.

If you get that far and have to go see their doctor, I would just take my meds with me; they should "match" what your doctors have sent in, etc. That you take OTC stuff for "normal" chronic stuff won't count and I think, that you decided to retire (instead of someone laying you off/you having a disability that obviously directly caused your not working with an employer breathing down your neck because your performance was suffering, etc.) will probably work against your favor. So far, only you have said you can't work; no one else "official" and you're at retirement age anyway so it's probably too murky for them to bother with. In your next life :-) I would apply for disability first, earlier, not retire.