I'm a lot less alarmist about headaches -- very few people have brain tumors, but many think they do. The question is always, what kind of headache? Other than that, anything you can only get on the internet is something you should always do a lot of homework about -- there's usually a good reason stores don't carry it.
Just a little info. for you! The headaches you should have checked!! I had the same problem and it ended up being a none malignant brain tumor. I'm not saying that's what you have but your doctor should have you get a cat-scan.
As for the hip pain, do you do any athletic sports? it could be any of the following Bursitis, Iliotibial Band Syndrome, or Piriformis Syndrome.
You can google each for the definitions of each. The kratom can be addictive!