advice on other menstrual cups on the UK

this is my first period using a cup as I'm having my first period since having my son 5 years ago and the contraception I was on stops it. I automatically went for a moon cup as it's the only UK one I had heard of and it recommended the larger one due to having given birth vaginally. but the end seems to protrude more than comfortable. I can't feel the main cup (that's pretty comfortably placed) but the stem is in a position between my lips that I can feel rubbing when I walk and when I sit down it gets pushed and moved about and is becoming a little irritating now. so unless anyone has got any advice on how to reduce this issue can you recommend another brand. preferably UK originated so I'm not going to have to spend a fortune on shipping! Thank you x