I started Singulair and did not notice symptoms until about 8 or ...

I started Singulair and did not notice symptoms until about 8 or 9 days into it. The first side effect was severe nausea and fever, I thought I had the flu for about 2 days. I was in bed and then started researching side effects for the medication. Within the same nights I had 2 insanely weird dreams that kept me up. I was literally afraid to go back to sleep and finish these dreams, they seemed to real, like they were truly happening. I woke up in the morning and did not even want to get out of bed. I told my husband I felt very depressed, and extremely irritable. He said "What else is new!" Only joking. I am never under the weather, so we knew something was wrong. I quit taking the medication after these symptoms, because this is just not me. I think of the symptoms by itself would not make me suspicious, but all of them together....and knowing the only difference in my lifestyle are the pills, I had to stop. I will try and post if something changes. I am going to call my doctor tomorrow in hopes another medicine will not affect me the same way.