As above. Any changes in bowels need investigating. Referral for a camera/ look and see.
If you have anxiety, this produces adrenaline and that can make bowels go into overdrive.
Who and what is the 'meno dr'? Is this a consultant or is it another GP who deals with menopause?
Blood tests for peri are not recommended by NICE. Your hormone levels change hourly, so they are not reliable.
FROM NICE
Consider using a FSH test to diagnose menopause only:in women aged 40 to 45 years with menopausal symptoms, including a change in their menstrual cycle
If your cycles aren't irregular, blood tests not needed.
In the meantime maybe try something to help deal with y our anxiety- again, I'm not sure if you are anxious= loose bowels or loose bowels= anxiety.
It sounds like IBS which can be triggered by emotions as well as food.
Look at the FODMAP diet which is for IBS. You are supposed to do this with a dietitian but short term you could start it and see if it helps. Basically you cut out lots of fruit and veg, and gluten. It's an 8-week program after which you can introduce foods one at a time. You can develop gluten intolerance at any age.
Do you have real diarrhea (watery) or is it more loose stools?