I need some support

I am struggling with my emotions at the moment and my bones hurt! all over

! According to my Dr I have a vitamin D deficiency, ( only minor - it's 46.8 so I started taking supplements today. I also have issues with heavy periods, so I started taking ' iron ' I just don't feel like myself and like I've been fighting and fighting and it just isn't getting better. I am a fighter so I will keep trying but I feel so unlike myself, my moods are low Ive trialed working out, but I think because my body is lacking in certain vitamins it's not helping my cause.
Id really appreciate any help or advice from anybody who has been through a similar thing and has come out on the other side. Thank you!