When you're in perimenopause, we say that your hormone levels are, in general, declining. While they are declining "in general," it's likely that your levels of estrogen and progesterone are fluctuating erratically from day to day. Testosterone is usually more steady, not particularly fluctuating day to day or month to month. As a result, the mix of hormones changes, and for some women testosterone seems to play a more dominant role; one effect of testosterone is enhanced libido (it's sometimes considered as part of therapy to restore sexual function).
This may explain what you are experiencing. You asked whether you should be tested for hormone levels. While it's possible to measure hormone levels, and those measurements are accurate, the levels are accurate only for that hour or day and are not particularly helpful to predict what to plan on in the upcoming days or months.
I would say, enjoy the current state! I hope this is your ‘new norm.’
Dr. Barb DePree, M.D., has been a gynecologist and women’s health provider for almost 30 years and a menopause care specialist for the past ten.