Did I rudely interrupted the doctor?

I am admin assistant at hospital and my job is to interview watcher of patients and time is always running for me there are always people in front of me I interview for watcher whenever I have free time I will interview the watchers of ER PEDIA on second floor and sometimes I can't even go there because of many people in front of me its like I just insert Er Pedia when I have free time to interview watchers on second floor and when I went there I interviewed the watcher of this patient. I saw her talking to a woman but didn't really thought she was a doctor I actually asked her if I can interview her as a watcher of patient she said yes I interviewed her and noticed again the woman interrupting us if we are done I said wait maam and I said thank you to the watcher. Later on I got a call from Sir Mike and said I was rude for interrupting the doctor interviewing the patient saying she wasn't done and I just interrupted them. I said I didn't noticed her and I apologized. I guess I should have wait for them to be done but then again maybe I won't have to interview them again because when I go down in office pedia is on second floor maybe there's many people again waiting for me to interviewed them and I won't have time again to go to pedia when that happen. I feel bad knowing I was rude for interrupting them but then again if I wait them maybe I won't interview her again because of my lack of time. by the way we work at public hospital. But I still feel bad doing that any advice?
Did I rudely interrupted the doctor?
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