Getting some real good advice here and have taken everything on board, thanks guys.
Ok, I am going to hold off the steroids for the next 3-4 months and then look at it again. The main things I need to do is change my workout and keep accurate records of what I am eating.
I am going to look at doing 3-4 45 min or 1 hr sessions a week focussing on compound exercises training a different muscle group each session.
I realise I need to be much more scientific about what I am eating so am going to work out how much protein, fats and calories I am eating at the moment and then keep increasing amounts of each trying different things that hopefully wont upset my IBS. I will keep written records of everything I eat and make some meal plans focused on target amounts. I think it is here where my biggest challenge is.
It seems that unless I can address the above changes to diet and exercise steroids would be pointless anyway as the ends wouldn't justify the means.
If anyone has any advice on good compound routines or apps to help record diet etc, that would be great.
Also if I did go down the steroid route, for my weight (145lbs) what volume of protein and calories do I need to be eating for it to be worthwhile.