I have noticed the last few mornings when I wake up with a full bladder that my uterus (although small....the size of a cupped hand) is bulging off to the right hand side. Quite predominately. Have any of you had this happen and if so, what was it?

I googled it and it came up with a heart shaped uterus which I'm pretty sure I don't have. Surely they would have picked that up whilst I was pregnant with my son?