Uncomfortable wear & getting lost 'up in there'

Hello all! So glad to see this comm exists. I just bought a MoonCup, size B (I'm 26, not a virgin, no kids) and am using it for the first time--or trying to, anyway. I'm still trying to find the right fold/insertion method, but when I finally get it in there it seems to go way too far up of its own volition. Like, I haven't trimmed the stem at all and I can barely reach it to remove it. Furthermore, I can very much feel it and it's uncomfortable, and I know you're not supposed to be aware of it at all, much like a tampon (right??).

It seems to be doing its job--it's not leaking, at least--but I'm still pretty sure I'm doing something wrong. I really wanna make this work because I'm stubborn and I spent $30 on this...any thoughts??? (Sorry if this stuff has been addressed before!)