Need Serious advice !!??

My period is usually regular , I've never had any problems with it. Last month I had my period on the 11th of September and now we are on the 18th of October? I've been getting cramps but still no sign of my period ? also my bobs been hurting it feels like they are bruised and my boobs have never felt like that before ? I went on Google and it says cramping and tender boobs can be easy sign of being pregnant ? should I take a pregnancy test now or should I wait ?