I just took a prometrium pill tonight for the first time in order...

I just took a prometrium pill tonight for the first time in order to help with my sleep disorder and menopause symptoms. I had visited with an endocrinologist who had prescribed this medication to me along with Synthroid and Vivelle . An hour after taking prometrium I started experiencing severe shortness of breath along with heart palpitations to the point where I thought I was going to have a heart attack ! I am seriuosly thinking of discontinuing all these drugs and allowing nature to continue it's course......seems much safer and comfortable than modern day drugs !