Hello, I am new to all this and have a few questions. my period came in July 24, 2016 and hasn't came. I had intercourse…

Hello, I am new to all this and have a few questions. my period came in July 24, 2016 and hasn't came. I had intercourse last month in August. on my period tracker it tell me I had sex 1 day before my fertile window. It's already been two weeks as of today and my period still hasn't came. I was wondering if I could be pregnant? My nipples have been very sore and Im having this mild pain in my stomach but it doesn't feel like cramos. I tooken a photograph of my stomach to show if it looks like im pregnant.