Hi. I am going to get some blood tests done tomoro because my doctor thinks i could have a overactive thyroid. Basically i have been having strange flushes and also i have been having this strange feeling below the breast bone which makes me dizzy. Does This Sound Like a Over active thyroid i am also having a investigaton for ectopic heart beats i have a ecg and a echo cardiogram and they where fine soshould i worry about these beats and could they also be the cause of the dizzieness thank you.