Ok very important question here. I will be 40 in a couple of weeks and going through early menopause?

based on my current hormone tests and no periods and symptoms anyway, I also found out that my Iron levels have dropped from borderline low to very low in 1 month, that was fast. My ferritin has gone from 18 one month ago to now 15. I find it so hard to get out of bed late in the afternoons as I am so tired. I hate red meat and will not eat it. Used to. Turned Vegetarian. I am just wondering what will happen if my ferritin gets too low? could I die? at the moment I am very anemic and feeling so exhausted, and wake up at about 3-4pm and even then I find it hard to get out of bed. Could it be my Iron stores that are depleted or menopause that is making me so tired all the time now? If it is my Iron what could happen in three months as I was told to come back in 3 to get another blood test what would happen if it dropped under 10? Is there a limit on how low it can go? at the moment I am so exhusted that I cannot do very much and so fatuiged too.