I have always been very regular.(25-28 days) on my menstrual cycle. The longest cycle I have ever had is 29 days, and that was only after a short cycle of 24-25 days, and it has happened only a couple of times in the duration of 4 years.
I am 43 and just started smoking a month ago. Today I am 30 days into my cycle, and there is a very pale pink scant discharge, but no blood. I took a pregnancy test early this morning and it was negative.
Can nicotine and smoking delay one's menstrual cycle?