Bathroom Leakage

I appreciate your answers.the only way I can fix it myself is by going to the roof and that is impossible for me.I cannot reach the spot tru attic.I have a fixed spot where it gets wet only when there is rain with wind.Once it stops then it gets dried.Do I have to go to thru a roof repairer and spend lot of money for this!can you advise me if I leave it like this is there chances of incurring into bigger problems! Thanks, Vijay naik