I just purchased an IWC ingenieur which has the SW200 movement and noticed that sometimes it loses time and sometimes it gains time. The time it loses and gains varies also. Once it gained a second in a day and one time it lost 9 seconds. Am I being paranoid or should I get the watch regulated? I assume it is how I wear it that affects the accuracy but I've never had a watch this inconsistent before. This is my first Sellita watch. Any thoughts?