Diabeties and menopause??

ive been type 1 for 20 years over the last few months ive been getting really odd symptoms hot flushes , palpitations , mood swings , am i going through early menopause ?, i know type 1 is a major factor in early menopause and its really common and ive had my kids and dont want any more so im not worried if it is ,how do i find out if i am do they do a blood test ?whats your thoughts on the subject??help......