I bought some M&S maternity bras when I was 8 weeks pregnant which have been great. I'm now 28 weeks and my boobs now rest on my bump. Bra is comfortable when I put it on, standing up, but sit at my desk any length of time and it's so uncomfortable I want to rip it off. Cup size is ok, maybe I need wider fit but not sure if it's that or because there is no boob/stomach gap any more 
. Anyone else had this problem, what bra did you buy?? I could always give into temptation and fling my underwear across the office but I'd like to know I have explored all other options 