Tomoro symptoms and conditions

Ive recently started taking zoloft for anxiety..just started on the 50 mg today after 4 days of 25 mg. The first two days were awful for me...intense headaches, feeling sick, nausea, tired, constant yawning, jaw ache from clenching and grinding my teeth. This is my 5th day and i am restless, i cant focus on study and keep putting it off. I am so tired i feel i could sleep through the entire week. my vision is slightly blurry...but not so bad i cant see the computer screen, however my typing is really bad...that may be due to the restlessness and agitation.
I have an appointment with the doctor tomorrow, even if it's only been 5 days im not too sure why zoloft was prescribed for me when its more for depression and social anxiety. Today in the car i felt really panicky, and i thought i could just fall asleep at the wheel or have a heart attack because my heart beat has felt even faster than before. If these side effects go away in a few weeks and i can be reassured i will start to feel better and happier and less anxious then i will continue them. However my university assignments are going to be really poor.