20 Minutes Or So After Urinating, I Feel The Need

20 minutes or so after urinating, I feel the need the need to go again. This has been happening for a few day now. I have had bladder infections in the past, and i know what that feels like; INTENSE need to urinate only to go a few drops. I do not have severe pressure, only the normal pressure that I have to go pee. When I do go, I do pee a bit-not just a drop or 2. So wondering if my bladder is not emptying when I go? I'm 50 yr. old female-very good health. Non smoker/drinker/weight is fine. No fever, no pain in my pelvic area.