My parents boxer was diagnosed with BCM 2 years ago after having several collapsing episodes. We rushed him to the hospital and his x-rays and bloodwork were fine but his ECG showed that he was still having run's of VPC's. We immediatly left our hospital and and drove over 3 hours to OSU to have him seen on emergency (to look at him him looked perfectly fine.) They had to call the cardiologist in to look after him. They were able to stablize him and he was started on Sota

. A few weeks later we had the Holter monitor placed and the results revealed he was having less VPC's but still enought to be concerned. They increased his dose to 80mg twice daily. Since he started Sota

he has not had anymore collapsing episodes (knock on wood.) While we were at OSU they mentioned the BCM study Dr. Meurs is doing he was actually accepted into the study!! Just last weekend we drove back to OSU for his 2 year recheck aapointment. They do a detailed echo on him and place the Holter Monitor every year. This helps us to know if the meds are still working well and if they need to be adjusted at all. So far Cayenne is doing good since his diagnosis.
I strongly recommend you take your baby to a cardiologist as soon as possible. We were lucky with Cayenne, he collapsed which was a sign somthing was wrong, unfortunaly the first sign for a lot of boxers with BCM is sudden death. I know it is bad timing with you being 9 months pregnant, is there anyone who could take Otis to the university for you, or go with your husband? I too would restrict his activity as much as possible until you get a difinitive diagnosis and start to treat it. All three of Cayenne's episodes happened when he got excited. Like others have said, an ecg and echo might appear normal, you need a Holter Monitor placed on him to see what's going on. Good Luck with Otis, if you have any questions please feel free to pm me!!!
~Carrie~