You can even use your wedding ring. Last night I did it for my mom and it was spot on and right after we set the intention ( I know, I'm pushing it, lol) to use my mother's hand as if it where her mother's, my grandma and it was again spot on with 12 kids all the right order and gender.
I'd think it does count a chemical specially if you were aware of it.
Yesterday I had boy, boy, girl, twins (girl and boy). Today i had boy, girl, boy, twins (girl and boy).
made my mum do the test and was so excited to see the very first movement was circlesI was her first child. I thought her last movement would be a boy (my brother) but there was definite circle movement after that which i thought strange but mum said she had a mc after my brother...