I have been mistified lately by what has been going on with me. I...

I have been mistified lately by what has been going on with me. I have allergies that are not under control. I take Zyrtec and flonase. When I went into my Dr. complaining that I didn't feel well. She said it was allergies and that I should try Singulair since it has been approved for allergies. Well I felt better for a couple of days and then boom! Sore throat, ear popping, fatigue, neck stiffness, upper abdomen tenderness and swollen glands under my jaw. No fever though. I thought perhaps I had Mono. So I had the Mono test done and it was negative. Now I read these posts, and I am thinking it could be the singulair. I can barely function during the day, and have been taking 3 hour naps! Wow. I will stop taking it today and let you all know how I am doing in a couple of days!