I'm a marine biologist and frequently have to scuba dive all day long for several days in a row. I've been successfully using my diva cup for about two years with no problems - all the sudden this summer with the beginning of a new job and a lot of diving work - I got the first yeast infection of my life (I'm 25) - it appeared at the tail end of my period and was really hard to get rid of. The same thing just happened this week and I was diving the duration of my period. Coincidentally I keep getting my period my first day in the water (maybe a combination of the amount of time we work on the water and pressure squashing my uterus) so I'm assuming that the last infection also happened during a lot of diving with my cup in. The blood in my cup after a dive is always of a much thinner consistency so I think a little water does leak in. Maybe having seawater hanging out in my vagina all day for 4-5 days is causing it - although I'm not quite sure why. Have any other divers had this happen to them? Any suggestions on preventing this? Any ideas on whether I need to clean my cup hardcore every night or my vagina?
Other than this irritating side my cup has been super reliable while diving - mega bummer :(