This does sound quite similar to how I have been feeling and would be grateful for your opinions :)
Since having my second child in june 12 (had lost a lot of blood - big baby!), I have been feeling very dizzy (at first docs thought it was labrinthitis - sorry for spellings!) but it became constant along with fatique and jelly like legs. I feel sleepy all the time and feel heavy and dizzy in my head even just walking around at home. Have to have daytime sleeps with children and go to bed really early every evening. No longer go out to socialise because I feel tired and faint and off sick from work. Recent blood test showed im vitamin D deficient. My mum has MS but neurologist seems sure I do not have it luckily. He suggested perhaps chronic fatigue. My immune system is terrible and I am recovering from tonsillitis and antibiotics.
So worried that it will get worse till I cant look after my children and haven't been given a scan or anything. Any ideas as to how to feel better?!! Thank you!!