i have been taking clen for 8 days now adding one pill a day at first but now i have leveled off on 4 pills recently and especially this morning, i have experienced shortness of breath and it feels as if i have a sore throat i have read that clen is used in some countries as a broncodilator for the treatment of asthma but can clen cause me to feel as if i have asthma. anyone please help should i continue usage?