neck pain and dull headache

hi everyone, i am 15 weeks pregnant and the last week and a half I have had like a stiff neck and dull headache, not all the time but just like niggly pain in my head not in one area it changes, its as if I havent drank enough water ??? I had neck pain before I got pregnant and had mri I have wear and tear on my neck, just worried and wondering should i go to gp or is the headache and stuff normal?? I am just starting to eat normally again as i was sick for first 3 months!! thanks in advance a very nervous first time mummy