Hi! By background I am 35 and have had 3 children. I am using a Lunette size 2 with the stem fully trimmed. This is my second cycle using it and I just can't seem to get it right. When I have it in it is generally comfortable, although especially on the first day of my cycle it can be painful when it pops open and crampy for a while afterwards. It can also be hard to get it to open fully, when I try and feel around it is sometimes concave in parts. And even when I think it is in right, and I can't feel it, it leaks. Not a lot, but enough to need to wear a pad all the time, which I really don't want to do. I'm wondering if maybe it is a little large / stiff for me? Or maybe I'm just not getting the seal right? Any ideas please?