37 weeks 1 cm

Hi momies,im on my 37th week and galing ako kay ob yesterday.. in i.e nia ako and sabi nia is 1cm palang daw..den early this morning after ko mag wiwi may spotting ng konti..is it normal?.wala pa naman ako nararamdaman na pain contraction..mejo mabigat lang pakiramdam sa puson and balakang . Is this a sign na po ba?ot hindi pa naman. Thanks in advance.