Age 46 missed my period this month, always regular, took 2 pregnancy tests both negative i don't want to be pregnant, i never had kids ?

Irregular periods: Menopause symptoms can start as early as 40 years old; see your doc and get hormone levels done to confirm.

Menopause?: If you have had 2 negative pregnancy test then you're almost certainly not pregnant. You are at the age where your periods are going to become irregular and then will eventually stop altogether. If i had to guess i'd say you were likely entering menopause.