What Causes Leakage Of Clear Watery Fluid From The Nose?

Hi, i am a 20 year old female.2 weeks ago i had an URTI and the infection healed after i took some antibiotics also i still had to blow my nose up to this week.on wednesday i bent my head forward trying to read a magazine then i felt something gushing from my nose.At first i thought it was a nosebleed until i saw clear watery fluid dripping on the magazine.it made many drops like 10 because i kept wiping but it would continue dripping for about 2 minutes.it stopped and i completely forgot about it until i noticed the frequency.this has happened atleast once daily for the last four days although not as much drops as the first day.yesterday i got worried and googled.some are saying it could be a CSF leak others rhinorrhoea and some sinusitis and i am really scared.PS:I dont feel any pain just the drip