I'm struggling pretty bad to get my cup in right. It's my first period trying it. I'll get it in but then it won't unfold and I haven't ever been able to get it to turn, even when it's not sealed. Am I doing something wrong (not far enough in, too far in, etc.)? Any tips on getting it in right? I've also had issues with the part to pull it out stabbing the very outside of my vagina (labia?). Please help. I really want to use it, but I also want it to be reliable and comfortable.