I am 15 days delay

Last contact is JULY 2 having period at JULY 7th by the next month I have period but 2 days early August 5th but this month I had 15 days delayed of my expected period days...I am stress last month because of my mothers condition...but I am trying back on track to have a healthy Lifestyle because I have a irregular period before when I gain to much weight but I am trying my best to stay fit and eat healthy to have a good hormones but this happens i am at my 48th days since my last period,am i pregnant?