Feeling sick...

Urghhh,dunno why this few days I feel uneasy...my body system go haywire...i feel sick...my stomach gassy,my appetite up & down,I cant sleep well,backpain sometimes and most I hate,frequent urination...that means I have to go to see "Mr Tan" most of the time and it really make me sick as I could not focus on what I am doing...I dun usually be having the pre-PMS as early as this..and the worst part is I had a major unbearable mood swings...tu yg plg tension!!am going to clinic afterwards... :(