Period overdue.

I am 48 days into my Cycle. My last Period was August 20, 2015. I think I was ovulating in the third to fourth week of September but I not real sure. Can I have some helpful advice please? I've also been having period like symptoms for almost 3 weeks now such as bloating and pain. I am a 22 year old Virgin so I know for sure I'm not pregnant. I just need advice please!!! Also since August 1st til now I have lost about 14 pounds 6.35 Kilograms could weight loss also Prolong your Period?