Unwanted chat is created

When i check some contact,s status by going to contact list of whatsapp, selecting a contact, pressing very lightly to see his online status, a message appears regarding encryption of chats with that contact. I donot however send any message and retract to cantacts by again pressing chats toggle, an automatic chat is shown created in my chats of whatsapp. Does this mean that the mean that a blank message was sent by whatsapp automatically, which is not desirable at all. Kindly reply to my email- singhbee7@yahoo.co.in, as this very stressful for me to be sending a meesage which i have not intended at all.
Thanks and regards, and how this can be rectified by you at App stage, that no message can be sent unless you specifically press Send button.