Does stress cause dizziness always?

YES< stress can cause dizziness... but so can other things...

do you where glasses by chance? if not, maybe you should get your eyes checked....you may think you have perfect vision, but the dizziness could be a sign of poor eyesight, which is alot easier to deal with than stress that's strong enough to affect you for 3 months straight and ruin you life, trust me

I would consult your doctor, he or she may recommend that you see a neurologist. You could have anxiety, that causes alot of ailments. There is alot of reasons for dizziness, like your diet, vision, could be a simple ear infection, sinus infection, the list could go on, but you really should see your physician.

you need to go to the MD, I know somebody with this condition

I would see a doctor, and if you cant afford one, go to a neighborhood clinic.

Some info from the Mayo Clinic
http://www.mayoclinic.com/health/dizziness/DS00435/DSECTION=causes

Go see a doctor

it can but so can other illnesses if it doesn't go away soon i would see a doctor