I am 34, female, and started taking Singulair since three week ag...

I am 34, female, and started taking Singulair since three week ago due to allergies. Since last weekend I have been feeling terrible, with dizziness, nausea, and fatigue. I thought that maybe my sinus infection was not totally gone, but today my husband told me that maybe some of the medication I am taking is making me have those symptoms. He started doing some research online and found lots of information about Singulair side effects. Now I can see that many people have been having different side effects. I wish Doctors would be a little bit more informative about side effects symptoms. I won't take any more singulair and hopefully I will start feeling GOOD AGAIN! :o). I wish we wouldn't have to be trying SO MANY TYPES OF DRUGS! Shekinnah