My msn messenger signed in in two different locations!?

[Marina]

I had my msn messenger online and suddenly it went off and it displayed this message that i was signed out because it was signed in some other place and that other place does not allow to be connected in two places same time. I did not have email opened and internet on my mobile was cut off. I have no other associated accounts with this msn add, like facebook or other social media services. how could this happen and is there a way to know who else could sign in my messenger? i know yahoo has a notification service that shows you the locations where your add was signed in. is there anything the same for msn too?

[Saraswati]

Someone is opening your messenger somewhere. See if you still can sign in your messenger, quickly change your password & recovery email address & security questions. Otherwise you won't be able to access it.