it is okay for your breast to hurt even without a bra on

Breast pain is normal, bra অথবা no bra. it has to do with hormonal changes in your cycle, অথবা just growing pains.

well, there should be a reason for it. Nothing hurts for no reason

That's normal. I am the same way.

As all the others have ব্যক্ত to some degree its perfectly normal but if it seems to start to do it আরো than it has অথবা when আপনি are not expecting it I would talk to someone so for now keep a note of dates when it does it and which side and see if there's any pattern to it. Then if আপনি are further concerned go and talk to someone start দ্বারা talking to your mum অথবা at least a nurse.