Hi Jennifer,
I'm exactly the same as you.. there is no real cure (except birth -he hee), however the way that I try to hellp with the pain is:

Hip Pain: as the other ladies have suggested a pillow really helps. I use one of those squishy pillows which I think are filled wtih bean bag balls so that they form to the shape of your belly and then lean forward so that I'm almost lying on my tummy - NOT on my side (as my hips hurt too much)... My physio said that this position is best for me and for baby... so try pillows and leaning forward more so all the weight is not on your hips.

Headaches: I am the headache Queen I'm sure. Have hubby give you a massage - a really hard one at the base of the neck and even up into your head / temples (we use almond oil) then lay down in a dark room with a cold washer over your forehead. Then, for me, (and this is key) picture your brain in as a 3 dimensional object. Find out where the pain is, is it in the front of your head? is it in the back? Is it only on one side? Once you issolate the area where there is pain, take all your thoughts and put them in the area of your brain where there is no pain... and stay there until you either fall asleep or the pain goes (or decreases - sometimes my headaches last a few days). I learnt this as a little girl who suffered with migraines it really helps me as it is very rare that your whole brain hurts, normally just one side or one part so if you can get away from it then it helps manage the pain without drugs.

good luck.