Like Puzzclar says, your T will most likely have heard loads of stuff like this. I do really hear that it's embarrassing for you, but honestly lots of people talk to their T's about menstruation and much 'worse'.
I told my T some really yucky stuff before and she didn't bat an eyelid. Maybe write it down if it makes it easier not to say the words? Or could you or your Mum email and tell her?