If you have an Implanon and are getting a lot of symptoms that sound hormonally related, one thing to do is to remove the Implanon and go on another form of birth control that doesn't involve hormones (such as condoms and foam or an IUD), to let your body go back to its normal hormone cycles. Do this for two or three months and see if your cycles regulate, and how you feel. Keep a journal, it will help you see patterns. Then see how you're doing with the symptoms you list.
I assume from your use of the phrase "over my life" that you have had these symptoms longer than you have had an Implanon, but it will be impossible to sort out your natural hormonal baseline if you're on hormonal birth control so suppressive that you are not even having periods.
A lot of what you are dealing with also sounds like you have a lack in the nutrition department. Try taking vitamin D3 (unless you are out in the sun for at least an hour every day) and also iron. When you take iron, take it with vitamin C to help with absorbtion, and a daily fiber gummy so the iron doesn't give you constipation. It's pretty mild on your body to improve your vitamin intake, so you could do it at the same time as your system is shaking off the effects of the Implanon.
I'd suggest a three-month trial without a hormonal birth control in your body. Condoms and spermicidal foam are one way to go and an IUD is another (as long as it isn't a hormonal IUD), just get off the b.c. that keeps your natural hormones so suppressed that you don't even have a period. Keeping your hormones that suppressed is not that great for you for other reasons.