Mirena Side Effects or Not?

I am not sure if I want it taken out (partially because it hurt like a beast to insert it and I am sure it will hurt just the same to remove it if not worse) I have had the Mirena in for only 6 months, everything was going good except for the bleeding, I have been bleeding/spotting non stop pretty much since I had it inserted, as soon as it was inserted I started bleeding. I haven't had an actual period since before I had my son 4 years ago. for the past 2 months I would say I have been in an out of the doctors office, get blood tests and all different kinds of tests done to see whats causing my horrible horrible headaches, I have been a headache sufferer since I was younger but nothing this bad, normally I could just take a nap and my headache would disappear, with these headaches they dont leave!!! They just stay and get worse, no pain meds help. My blood pressure has been fluctuating and im sure its just from the stress of reading everything about this damn birth control and having 2 little ones to deal with ontop of everyday life.. I have also been dizzy for no reason out of the blue, I thought I was anemic again but my iron levels are perfect, I have no thyroid problems or anything else that would cause this. And I am not pregnant.... So my dr blamed it on my weird sleeping pattern, so I fixed that for a week and still getting weird symptoms. I have also been dealing with weird sharp pains in my ovaries from time to time, not like super bad but they are odd, mostly after having rough sex (so im guessing its just from things moving around?) I also told my dr about this she said it could be ovarian cysts which are fine we will just watch.... I have also been depressed? I am not even sure, I have only been depressed once in my life, (im only 18) and it was when my son died. I have been snapping at everyone mostly the kids when they aren't listening I just get so angry and yell and do things I really don't want to do, then I sit there and cry afterwards realizing what I did, I feel horrible, I just walk around most days like a zombie just completely out of it not knowing what is wrong, I don't feel like ever going outside anymore, people everywhere annoy me like no other, im just really not myself. Depression and anxiety run in my family and so do headaches, I have anxiety also but it hasn't gotten worse being on this BC. I went in to have this damn thing removed but chickened out when my Dr told me my symptoms aren't from this..... After reading a few of the posts on here, I am officially really scared that I still have it in and I am even more afraid that when I go in to have it taken out that my Dr wont be able to find it. I don't know what I should do, but I do know that this bleeding forever and all the rest of this I cant live with forever or I will go crazy.