Pregnant or just emotional?

Last night at about 3am I was watching a video about that girl that just got jumped by a bunch of girls in a bathroom and died from hitting her head. After the video I just burst out into tears because I related so much since I got jumped by a bunch of girls. Then I started thinking about all the people that have mistreated me and used me in the past and couldn't stop bawling. I finally pulled myself together after like half an hour but I barely ever cry and thought I had put all that shit in behind me. Do you think it's just old shit resurfacing or like a possible early sign of pregnancy?? I know this sounds so stupid and crazy but lately I get so paranoid of being pregnant so who knows. And both my best friends just recently found out they were pregnant so obviously it's on my mind