Good Evening I A 43 Years Old And Still Can

Good evening I a 43 years old and still can have children. Do not take any birth control. No problems with ovulation or irregular cycles. My periods are regular 28 day full cycle I bleed heavy 5-7 days. The last time I saw this was Dec 24, 2015. No symptoms of menopause. Two home pregnancy reveal negative findings? I never have had any morning sickness or any of the usual "pregnancy symptoms". I am a little unique. But concerned, if it's menopause or pregnancy?