Sacroiliitis damage.

Hi Clair ,I have just had some results back from a MRI scan on lumber spine. Scan confirms , acute on chronic bilateral inflammatory sacroiliitis with further changes in the spine at D11, D6 . I know I sounds crazy but I feel such a weight off , I got  so much more as in bad bad pain legs feet arms so on . It is like now I know why half my back goes numb if I try do garden , even just five min . I got the nerve damage in my legs left arm . Sacroiliitis I can not even say it why do they insist in using Latin when we find it so hard to say . It's just last few days since I read doctors report I feel so much better in mysrelf , I can work it out see why I get pain when sit in a.chair or hold my computer in a way it hurts . Can anyone please say how I may work with it or live with it , i know it is only going get worst but maybe if I swim do excersize to give my right sacroiliac joint strength . I got a doctor appointment soon my medication was gabapentlin 900 ml x3 per day . They are good just not for me . I now on pregabalin , but are they best for me . Anyadvice I thank you for . Is sacroiliitis joint same as sacroiliac . I just wish they had given me a lumber MRI scan way back . I think with orthopaedic clinic and telling me how to sit or stand I may of managed it much better , or not I don't know . Anyway that's me in a nut shell . Any help please and thank you , John