Hi Shoegal, thanks for the advice.
I just spoke to a lovely lactation consultant who said I could try and see. She said I would need to take motillium and hire a double pump and express about 8 times a day for 10 days to see if a supply builds up. When I told her I had graves disease that played up post natally she said that's why I would have had trouble in the beginning (which I had begun to suspect but was never told). WHY DIDN'T ANYONE EVER TELL ME THIS!!! Sorry, had to have a little rant. . .