confused

nag pt ako the other day and it's positive kya lng po medyo confused ako kung ilang weeks n ko preggy..my last period was oct 31-nov5 then hndi ko n sure ung exact date nung nag k period ako ng nov..last dec hndi n ko tlga nagka period until nag pt ako the other day kya ko nalaman n pregnant ako.hndi p kase ako nagppa check up since nung nalaman ko