Urination 12 times a day. Do any tests.

Age 48, Male, Medication - one Espin 2.5 tablet in morning (hypertension) since one year. No other health issues. Since 15 days i feel my urination frequency increased. I go for urine almost 12 times a day in 24 hours. Whenever I go for urine, I will have approx 150ml urine, but some times very very less quantity. However, my urine color is normal, clear, no smell. Also no pains while urine. I drink almost 1.5 ltr water in a day. Almost 150ml water every hour. I remember on 3 days, i had minimal water intake and minimal urine frequency too (upto 7 times)  Furthermore, during nightime, I hardly go for urine once but not daily. I don't feel tired. Also, everyday i do stair climbing till 9 th floor without exhaustiveness. Considering above i am not sure whether it's my urine sensation feeling only or will there be any other health issue or its normal. Kindly advise the causes and whether there is any need to do any tests.