No period 40 days but no pregnancy symptoms

Ashley
Hello ladies, 
So my Last cycle was Sept 20 and I didn't get one inOctober. I do not have any symptoms of pms or pregnancy. I feel normal. I recently found out I was a type 2 diabetic so idk if that has something to do with it. I'm not on any bc and just started on metformin once a day about 2 weeks ago. Any feedback would be helpful. I haven't taken a pregnancy test because I don't feel pregnant. Heeeeellllllppppp