Vertigo Issue. Up taking 1-2 tab rantac!

I am suffering from certain issues for more than 4-5 yrs now. Never consulted any specific doctor for the same. 1. I feel that my head always spins or the surrounding near spins and I feel off balance and feel  a sensation that I will fall. Its a sensation that we feel during earthquake. When I sit on a chair it gets more worsen to an extent wherein I need to stand and eat. Even on a Salon Chair I need to hold on to an object so I dont feel that falling or spinning sensation. If I am standing still I feel the same. Same happens few a times when I am lying on bed or walking. I always feel tired and want to lie on bed always. Going out means alot for me and it makes me feel sick. I do have Migraine for last 7-8 yrs for which I do take Tab Vasograin when required. 2. I feel shortness of Breath, few a times I talk and then I have to stop to absorb more oxygen to breath. No asthama and No family history of the same at all. 3. I suffer from chronic acidity. I end up taking 1-2 Tab Rantac