Doctor time?

Hello! I apologize ahead of time for tmi. So, my husband is currently deployed. He's been gone since the end of January. Ever since he left, my periods have been different. The first came 4 or 5 days early, was very very light, and only lasted 3 days. The next one was late, very very light, And only lasted 3 days. And same for the last one. Now I'm 3 days late for this period, and I'm not sure whether to be concerned or grateful. My periods are normally pretty heavy and last 5-7 days, so these last few months have been FAR from that. Has this happened to anyone else? Is this something I need to be worried about? Thanks in advance :)