I'm 29 years old who's a dancer (though less regularly these days at around 1-3 hours a week vs. 6-9 hours). Additionally I'm a virgin so I have no children. I attempted to measure the location of my cervix during my first few days of menstruation and got around 50mm, though I'm unsure if I measured it correctly. My period is usually around 7 days in length with the first 2-3 days being heavy (2 super absorbent tampons which sometimes includes one regular tampon, the 3-4th being normal flow (3-4 regular tampons), and the 5-7th being light/spotting (usually barely enough to fill even half of a light tampon).
I was wondering if you could advise me regarding a general size/brand to purchase that would be a good fit (yes I know that it does vary from person to person). I read various sizing guides, but was unsure as I have what I believe to be a heavier flow (and I know it's all relative), and am unsure about how high my cervix is during menstruation (well if I measured it correctly) as I know that the length is important as well a capacity. I probably want something not too hard either. I was thinking about getting a Lunette size 1, but am nervous given my flow. I'd rather start off with a cup that has enough capacity for my heavier days. Any guidance would be greatly appreciated. Thank you for your time and support in this endeavor.