Dream about TTTS. (Not pregnant)

Lily-Anne
I had the weirdest dream last night, and it left me feeling so confused. 
In my dream I was having an ultrasound, and after finding a healthy 12 week old baby, they moved down towards my cervix and found a little blob that they recognised as another foetus. This one was only measuring at 5 weeks. 
I woke up and instantly searched for what this could have been and found TTTS, something I had never heard of before until this morning. 
Why would I be dreaming about this?