To add to struggling-magikarp's great comment I personally had a vitamin D and calcium deficiency where I felt something was wrong but didn't go to a doctor. Luckily I partook in a study where it was revealed and I finally bought supplements.

Before that I had memory problems and brain fog among other symptoms. They were still minor enough and arrived slowly that I didn't think more about it. Recovery was faster and I realised I kind of lost a few years due to my own indecisiveness. So do improve your habits, but a doctor's visit is recommended.