Switching to another more familiar language can happen without intentionally looking to "talk secrets" or keep other people out. Letting them know that you are

Switching to another more familiar language can happen without intentionally looking to "talk secrets" or keep other people out. Letting them know that you are uncomfortable when they constantly speak a language you don't understand and/or sharing the concern of missing out on project related talks or simply learning opportunities that might be sprinkled on all that yadda yadda in the office - is a good way to approach this. Nobody can know what and how you really feel unless you tell them. In my experience one could actually very well do without hearing all that constant office chatter, actually many people would wear headphones cause they want to avoid hearing it and/or being distracted by it. Also, if you believe they might be speaking about you - that is most probably not true, it is how we are wired to believe but most people will have their own things to worry and talk about.