Welcome to HCM
We understand your concerns
I went through your description. I suggest you not to worry much. The vibration
at the tip of the penis is felt normally and is common in people above 40. The pulsation is due to blood rush or stagnation. You can understand it. The burning should be possibly due to urinary tract infection
. Drink plenty of water and other fruit juices. Wait for two days and if required consult a physician.
Hope this answers your query. Available for further clarifications.