aches

i was just wondering if anyone was suffering with the type of thing i am as i dont know if it is just normal pregnancy aches & pains but i seem to be having low backache, its like a dull ache almost at the top of my bum and travels all around to my sides, on & off mainly on an afternoon & evening, they dont seem to settle & sometimes get really bad but not all the time, standing walking & sitting are all so unconfy. Also during the night i sleep on my side but wake every few hours because my legs & sides have gone dead, and i am in a lot of pain, takes me about 5 mins to be able to turn over onto the other side & then a few hours later i wake with the same problem, its driving me insane. I am 26 weeks pregnant but have quite a sizable bump now, baby moves normal & everything fine with him. Its just these aches are they normal ??? Has anyone had a similar experience ?

thanks, claire