These symptoms can be a sign of BPH
(benign prostatic hypertrophy) and you should see your doctor to have the prostate checked.
The best doctor for this is a urologist. They can check the prostate size and function using several tests, including psa blood test, dre (digital rectal exam of the prostate), pvr (post void residual), prostate ultrasound and possibly others. There are meds that can help.