Paragraph 5 symptoms and conditions

I have been taking Singulair for one week now due to my exercise induced asthma and allergic asthmatic symptoms. I feel very stressed out and anxious and yell at my parents a lot. Also, I feel kind of paranoid, like I feel as if somebody is watching me at all times. It is scary because I've only been on it a week. Also, my face is red and blotchy and my acne has gone from very little bumps to full blown breakouts all over. I have a barking cough and runny nose now that the doctor prescribed it. When I cough I have a pain on my left side that feels like someone is stabbing me.