ok so, I posted a while ago, and everything I posted went away except, my nipple is still hard (kind of like a ball under my nipple) I dont know if its a lymph node, Puberty, or worse! but Im worried about it... and today my friend hit me in the balls, and it still hurts, feels like a sharp pain on the one ball, and then a little above the guy spot, I am really worried, so any help is great thanks!

Ps: I also get like a cough, and wierd aches in my body, like my stomach just started hurting randomly one time.. but yeah, pleae reply