I Gave Birth May 14,2014 After 1 Month I Have

i gave birth may 14,2014 after 1 month i have my period regular period as well.. but 5 months past i have a irregular menstraution i always delayed 10 days every month and i get 10-12 days mens until this march 10.. my last period and until now april i dont have period so i take pregnancy test and it comes positive..