Implanting or something else

Misty
My body is off to the normalcy of the theories in medical books. My Culver m cycle is 25-26 days long and is clock work. I have always ovulated around 20-22 days into my cycle. I have three other children and I never had spotting. However, this time I should have started on the 25-26th and didn't. I did however start spotting pink on the 28th with some red on the morning of the 29th and then stopped. It has been almost 24 hours and I have started again with very light pink. The only thing I have from symptoms is urination seems to be more frequent. And the week before I had some mild lower abdominal pain. It was nothing like pms cramps. With regards to the fact I am 37, my mother believes this is menopause flat out. I have yet to take a pregnancy test since they did not show up until after I was 8 weeks with my other three. Any advice or suggestions? Is the red normal?