Menstrual Products... Any Diva Cup Users

Rebecca
I am new to this board but I am going to post. I am 30 years old and my cycles have always been extremely heavy, so I decided to get a new menstrual product, the Diva Cup but I tried it put this month and I could not get it placed at all, it seams like it might be to big but I am not sure, there are two model sizes, model one for women younger then 30 or women who have never had children and model two is for women who have had children or are over the age of 30, but I am a small framed women and I am wondering if the model one would be better for me.