Thanks for the query to H.C.M. Forum.
Perimenopause refers to the time period preceding menopause , when fertility
wanes and menstrual cycle irregularity increases.
As you stated in your query that pins & needle , numbness
symptoms develops when you lay down i.e. whole concentration is towards disease.
Get in blood for F S H , ESTROGEN
Consult a Gynaecologist and get his opinion.