Sarah at 7 weeks this is totally normal after a stim cycle. I think mine were enlarged up until about 10/11 weeks and then they started to settle down. Mine were painful during the first few weeks of prg which made me worry until I worked out that's what it was.

If they are big and fat they are producing lots of progesterone which is great for the pregnancy.

A friend of mine did a stim cycle and fell prg with twins and her ovaries were enlarged for about 18 weeks into the pregnancy.

PS - A big *WOOOOOOOOOT* on seeing a beautiful heartbeat!!