Stretch marks

So I've always been fit and never had to worry about stretch marks before but since my boobs have stared to get bigger and bigger I've got some very noticeable stretch marks that just seem to be getting worse. I've been using bio oil almost two times a day for a couple of months now along with cocoa butter but they don't seem to be helping. These marks just keep getting bigger and more noticeable! Does anyone know of anything I can use or do to help reduce them and of possible get rid of them all together! One thing I'm the most conscious about are scars on my skin and these are horrible 😔