Thanks for placing your query here.
I can appreciate your concerns.
Your symptoms point towards possibility of diabetes
Please check your random blood glucose
along with fasting & 2 hrs post breakfast.
If diabetes is ruled out checking urine examination(routine,microscopy & specific gravity) & visual acuity testing should be the next step.
Hope I have answered your query.
If you have any further questions I will be happy to help.
Wish you good health.