Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.F.
It is not there before, but hurting you only since 2 hours. It may be related with urinary tract infection
stones, some gynic problem, or orthopedic problem. appendix
, and nerve
involve ment is not there because they will hurt in any position.
I advise you to consult a urologist
for diagnosis and treatment. For the present antispasmodic may help you temporarily.Approach the doctor before it become continuous .
Wishing for quick and complete recovery.