Possible perimenopause

Patient: I am a 40 year old woman and in the last 3 months I had no cycle at all. On December 10, my cycle started, lasted 5 days, which is normal for me but then on December 27 or 28 it returned and seems to neverending. I am overweight so I know that could play a factor. I also have taken 3 pregnancy tests even though we use condoms every time. Could I be started perimenopause?