Hey there!
I think you should tell someone. Yes,it's embarrassing and weird but i don't think it's a good idea to try and break your hymen yourself-i mean,i don't really know what the repercussions would be,would it get infected? Would it hurt? I have absolutely NO idea,but if i were you, i wouldn't take the risk. I guess it's up to you in the end really. I have no real experience in this field,even as a 16 year old, but i hope that you figure things out and i think that telling someone is your best bet.
All the best!