Missed my period please help?

So someone on yahoo answers told me i had a 34 day cycle i always thought mine was a 28 day cycle April i started on the 4th-9th may 9th-13th and no period this month im out of shape yesterday i got my Wii back so iv been working out since yesterday but my period is no where i got hit in the bottom of my tummy cause my friend was swinging a Wii remote and it hit me and badly bruised my tummy i don't think that haves to do with anything though i took a pregnancy test and it was (-) i cant go to the doctors right now no medical.Oh and iv been peeing a lot :) 10 points to the best answer!!