Abnormal Menstruation

Hello mommas. Just wanted to vent out my worries and hear your thoughts. I have a very normal cycle for my menstruation, but lately (starting around September until now), my cycle got weird, and more or less it reached 40+ days. Now I am waiting for my period, I am currently on 43 days of my cycle however my PT is negative. Is anyone, experiencing the same as me? What did you do po? I am scheduling an appointment with my OB but I am worried sick every day thinking about what happened to my body. Thank you po.