Worsening pain in middle to lower tibia?

I posted this yesterday but with inaccurate information. I currently for the past few months have been having pain in my Tibia it seems. The pain is deep and very localized. First I thought it was a bruise but I realized there was no visible bruise and plus the pain has got worse. Mostly when I bump it right, it hurts very bad. Usually I dont notice it much walking around. However the past few weeks to month the pain has been increasing. Its still in one spot but I feel it sometimes just sitting still or even aches when I am walking. Pressing the area causes the pain to feel worse. Any ideas? I am 17 year old male btw. FYI: not involved in any sports right now either. Just trying to get more opinions on what people think. Thanks!