Missed a month of my period..?

Last month (May) I had my period the second week starting on Thursday. I only had it for two days and then I got really really sick on Saturday. I normally get my period for 6 days. I lost about 4 pounds from throwing up the broth I would drink and not eating at all. I was about 98 pounds then, I'm about 94 now. I haven't had my period yet, even though it's only June 14. ... I was due for it last week.. any idea why i missed my period? Weight loss? My horrible fever? Or is it just naturally late? :( This is only my fifth period, so I just need someone more experienced.