May i be pregnant

Hi ive been trying for 7 years my periods are irregular  i have pcos resently 3 months in a row ive had my period  this is my 3 month my period is due in 5 days today i saw a lightpink spot after i wiped with toilet paper and cramping a little not alot do u think its implantation and its a sighn of pregnacy ir my period is on its way