Thank you for your post and Welcome to EmpowHER!
Is there any family history or Cancer? Do you personally have a history with Cancer? I ask because I'm curious as to why you are jumping to the conclusion that you may have Cancer.
At 42, your periods may have become irregular due to perimenopause even though your other symptoms may not be related to menopause. I also don't want to scare you but could you be pregnant? I know you have a tubal ligation but unfortunately, nothing is 100%-- not even a tubal ligation. Please take a home pregnancy test if you suspect you may be pregnant. Early detection is key to avoiding the serious and often life-threatening complications that may occur with ectopic pregnancy.
Best of luck!