Weird pains

So I'll be 17 weeks tomorrow and lately if I get gas at all, my body doesn't process gas very well, I get severe shocking pains in my pelvis I don't know if it's the gas or something else. When I wake up it hurts to walk and my legs feel stiff and it feels like my ovaries are trying to murder me. @.@ my doctor keeps telling me as long as there is no blood to ignore it but being in the body ignoring it is really hard.