Barely turning 18 and going bald?

[Bulls11]

Hi I'm barely going to turn 18 tomorrow and everyone in my family is telling me that I'm going bald which is scarring the sh*t out of me, I took some pics and I have seen that I could see through my scalp it started around 3 years ago but I want to know if I should take action now and what kind of prescriptions should I be taking I will really appreciate the help.