I'm 34 weeks (first pregnancy) and I know some aches and pains are to be expected especially at this stage as baby is getting bigger (and I'm tiny in build).
However, for the past couple of weeks my sternum has been incredibly painful as has my right rib cage.
My ribs feel really bruised but baby has got it's foot in them so I think that's what's causing that.
The sternum however seems to be getting worse
no matter how I sit I can't get comfortable, tried warm baths which help while I'm in there but not once I get out, birthing ball sometimes helps a bit but not always and only when I'm on it. Taken some paracetomol which take the edge off but nothing else.
Yesterday and last night was agony and I've barely slept because it was so painful and made my whole chest ache/hurt 
I'm also getting aches in the area above my pubic bone but baby is head down and quite low so I appreciate this is probably caused by that.
Baby is moving fine so not worried about that but not sure whether to ring gp/mw this morning about this pain? I don't want to waste their time if it's just part of pregnancy but I'm really suffering with it 