i think i have done an estupido thing :D?

ok my gf is like other girls .. she needs to talk .. and as a bf i have to listen lol ... so today she was on chat with me.. before in our relationship we had an argument like she would babble and babble .. and sometimes i get saturated .. and would just be a little distant .. so we fixed that ... now today she was talking again .. i was there on the chat ... but i was in office .. some senior guy came to me and started discussing some work . . and i couldnt reply her instantly .. like after 5 mins .. so after that i said yes honey u were saying ? ? ... and she asked me 'ok what did u feel now? :P ' i explained her that a senior guy was here so i had to talk to him .. but my worry is i dont want her to think that im saturated again .. coz i am not .. how should i handle this ? .. after i explained her we talked normally ... but i know its in her mind now that i am suffering again ... im not .. how do i explain her ? .