Has anyone used this from 37 weeks onwards to prepare for labour? It was recommended to me by my local health food shop when I went in to buy some Arnica but now I'm nervous about taking it as I'm not sure whether it carries any risk. I'm also concerned as to whether it will have any effect on the thyroxine medication I take for my Hashimoto's disease (underactive thyroid). Anyone know anything about it? I'm currently 37+4. I will ask my midwife but not due to see her until next week so any Mumsnet advice gratefully received!