What Does Mole Like Spot On Back Indicate?

Hi, i'm a 17 year old femal and i've just discovered what feels/looks like a mole on my back. It also feels like something I had when i was younger and got removed (I'm not sure if his was also a mole, i just remember sometimes it would burst and bleed, ad thats why i had to get it removed). What could this mole/whatever else it might be mean? And should i be worried?



Thank you.