Hi Chrissie
Your post does not make much sence as CB ESA is based on your last two years NI contributions in the year in which you claimed.
I would seek advice from your local Welfare Rights Organisation who will be able to take all your circumstances into consideration; You can find your local Welfare Rights Organisation to help you with advice by clicking on the link below and putting in your post code, it will then come up with a MAP with a list of agencies.
advicelocal.uk Gary