tahicardia....

Hello ... what about an tahicardia ... Do you have it ..I'm in 12 week now, but i have it, all the time last seven days... Im whit hipothiroidea, Hashimoto sindrome ... Im taking pills for that , but my haert rate its about 110-125 in minute last seven days .. Do you take some pills or nature remedies for tahicardia. please help ?!