I got strange spots once (not while pregnant) and it turned put to be something called piteriasis rosea (sp?) (not tiny spots though so yours is probably something else).
I wouldn't be happy with the headaches or spots - if I were you I would speak to NHS direct 08454647 or see your Dr just to be on the safe side, and to see if you can alleviate it any.
How pregnant are you? If you're very pregnant the pain could be simply running out of room in there! I felt very uncomfortable towards the end of my pregnancy, as if my DS has a big elbow he was digging into my ribs!
Again I reckon it's worth getting checked out though.
not sure about the pains, would get them checked out, but i have had a rash in both pgs, tiny tiny itchy spots, apparently the result of hormones. started both times at about 34 weeks.started on my bump and spread from head to toes. had tests for OC but clear, so was given piriton to help me sleep as itching was worse at night. def mention when you see midwife/dr.