My 7 month old son has been on Omnicef for 1 week. He has had al...

My 7 month old son has been on Omnicef for 1 week. He has had almost black stools and today he was very irritable. On the second day of taking the medicine he didn't want to eat anything. All day he has acted like he has had cramps and has been very gassy. Tonight he woke up with a fever of 102.7 and he just won't sleep. I called the doctors office and the nurse told me that he did't need to be seen until his fever was 103.5. I do not think that I like this medicine. This is his 3rd ear infection in 5 weeks. We need something to clear this ear infection up but I hate the way it makes him feel.