Pregnancy after miscarriage

Incomplete miscarriage and na D&C last dec18. Yung dugo ko nagstop nung Jan4, 1st day ng mens ko na dapat nung Jan17 and until now delayed p dn po ako. Nagcontact kmi ni hubby nung 9-10-11-16-17-20, pero nag pt ako nung 16 and 22 kaso negative. Pero now May spotting ako like literally spots lng. Possible po kaya na buntis ako kht negative sa pt? Or false hope lang po? Kailan ko po kaya pwede itry ulit mag pt? May same case dn po ba sakin dto? Salamat po sa sasagot,