Drs for some answers

Ovulation test showing up ovulating however periods are really really light,. I have an over active thyroid from having hyperemisis at the begging of the year and been mis diagnosed till it was too late and we lost our baby in April... We've been in touch with a charity that will stand by us all the way if I get it again but starting to panic now that my over active thyroid making me have very light periods is going to be a problem.. This is our last child together to. Make our family complete so willing for it to happen.. Anybody had similar or same complaints?