Cipro and pyridium

I went to the Er last week and they told me I had a UTI and they gave me Cipro and Pyridium. Well I started taking the Cipro on thanksgiving and by the next morning I was so sick to my stomach and my heart was beating very irregular and I was having palpitations. well I have a bad heart valve so I thought I was that but now I am beginning to think it was the Cipro. I had only taken it for a few days when I really started feeling bad. muscle cramps so bad at night I could hardly stand it, irregular heartbeats to the point I could not sleep and nausea and diarrea. I am still not feeling good and having all kind of problems after a week. this the second medicine I have had a bad reaction to. the other one was Bactrim for a UTI back in October. I think I will just stick to over the counter medicine.