This involves men's (teen) health? Some one help please!!?

Im 15 years old and suddenly today i didnt get my erections like i used to get. Just yesterday i was perfectly normal and i got my hard erections. Im 6inches erect and 4inches flaccid but now its like 3 inches flaccid and not even thinking about sexual things cant get me an erection. I'm hoping this wont affect my life, and that its only a temporanly thing. Like in school i used to get erections for no reason and today i dont.
Latley i have been doing squats for execersie... can that be it why i dont get them no more?
And then i just read that if you do a kegel excersive you can have better orgasms... and i started doing it sunday but then i stoped yesterday because i saw no point in doing that... can that be it as well?

Please can someone help me and try to tell me whats wrong with me??
Thank you

ps: and if i do get an erection it only last for a few seconds unlike the ones i had yes.... not to say anything but i am

The squats would have nothing to do with.....

Some poeple do go through phases where thery dont get as 'excited' compare to other, normal days.

It could involve over masturbating or something like that (just a possibility?).

My advice is to give it some rest.... and see what its like in a few days... or a bit more. If you are still having a few problems with it... it may be wise to visit your doctor.

(Dont worry about seeing the doctor either.... if you were)

Good luck... there not much else I can help you with!!!