diva cup

i got a diva cup and used it for the first time this cycle. i have noticed on my lighter days or when my cervix is lower (i normally have a very high cervix) that it feels like its going to fall out. i just ordered 2 lena cups large and small sizes. i would like to hear peoples experiences. pros cons especially from other high cervix women and especially women who have went from the diva to lena cups. not that i have a problem with the firmness but how does that compare. any tips? thank you in advance.