I have PVC's in my heart regularly so I saw a cardiologist and?

He did a full in office exam, listened to my heart carefully, had blood work done with cardiac markers and did an EKG which all came out normal. He had me go to a stress test (treadmill) with an echocardiogram before it and after it. On the echo before it the tech doing the test said it was odd because he either couldn't get a good picture or the middle wall of my heart wasn't moving correctly. Everything else looked good in my heart and arteries, including my aorta. I did the treadmill test fine then got back for him to look at my heart and arteries again. This time he said my heart was working fine, just beating fast (102) after I rested for awhile which could be attributed to my being out of shape. He said he must have been mistaken and sent me off. I went into the cardiologist appointment for follow up a week later and he said everything looked great to him and that my heart was totally normal. Would he have seen my heart working like videos so he could possibly see what the tech meant? I just am hoping they didn't miss anything. I also had chest xrays and a holter monitor which showed normal.