Tirod trimester ptama

Sy bru nk msuk 13 w..bila check up Nadi sllu lju..dlm 120..ambik drh tirod mmg positive tirod...bacaan 17(H).. dktr bg ubt tirod..msih risau lg nk ambik x,,SB awl2 pregnant ni dh kna on ubt tirod dah..ada ke yg trimester prtma dah on ubt tirod mcm sy?