Is this normal??

for the past two weeks ive been feeling really strange. ive been having an upset stomach alotttt and ive had a loss of appetite and ive been losing weight too. i also have abnormal l bleeding and an excessive amount of l discharge. im not ualy active either. today i was brushing my teeth and i looked at my tongue and it was greenish yellow and it had like chunky white stuff on the back of it! is that normal?? also i have been having headaches and alot of dizziness. does anyone know what is wrong with me? ive also gotten alot of infections this past year such as shingles. :(