So the pass two days I've been feeling dizzy light headed and my heart rate is up. I am on heart medication and my doctor said it was ok but could be high due to possibly being pregnant. I don't want to test yet cuz it's to early. I have irregular periods so I just started BBT like my OB said to do due now before my period to get into the routine.. here is my chart and tests.. anyone have any information on why I feel this way?!?