I have stretch marks and I'm scared.

Joy

Hi I'm twelve and I grow really fast. I have 38DD boobs and I have now started developing stretch marks . Oh I also have my period. So I already have it on my arse as it big because I got he genes from my mom but I've started seeing it faintly in my arms and I am really scared because I don't know what people will think. The first picture are of the Ones on my arse and the second are the ones on my left arm. Please help me because my have has lots of stretch marks and I am scared that mine will turn like that. I also don't know what men will think when I turn older and they see me naked. Please don't leave any hate comments because I am VERY self conscious about my body and the way it looks. PLEASE HELPPP!!!!