Hey, I m a 20 year old female and I have been having some problems the past two days. First I haven t had my period since June 12, 2012, so I assume I might be pregnant but haven t gotten it tested yet. But for the past week or so I have had very frequent urination and the past couple of days I have been experiencing dizziness when standing, back head and chest pains, loss of appitite, and fevers. Can you give me an idea of what this sounds like to you?