Any idea po or same case with me

Last Dec 27-28 nag bleeding po ako with large clots and tissues. Nag stop nun 28 late afternoon. Then today may spotting this afternoon lang. Mag 2 months preggy ako sa January 5. Pero bakit po kaya nag negative na ung PT result ko today? Ano po possible reasons? Note: Hindi po makatakbo sa hospital kasi wala po nearest hospital even RHU kasi wala sila mga laboratory equipment. Thank you po sa sasagot. Maulan din ang panahon dito samin. #pleaseadvice