Why Does My Penis Burn?

hi im a virgin but, lately Ive been masturbating and sometimes i fall asleep without urinating after i ejaculate, now the inside burns a little could this be a type of infection ? Ive drank a lot of water to see if it might help me urinate the infection but its still there, i even mixed a small dose of banking soda and water and drank it as one i saw this as a answer online? what should i do are there any home remedies