I have bought a cup and bought it travelling. I am 24 no children not a virgin. Difficult to get in and feels uncomfortable, need to be able to put up with it for this cycle. But as I googled now I realised about different sizes. I have larger one I think. I am going to now order a new one taking into account size etc but will need to use this one for this cycle, but besides the uncomfort would using this size be bad for me in any way ? I’m freaking out it will be damaging ?