I am 23 years old and i noticed a small movable lump under the skin right next to my right hip bone. it doesn't hurt but should i be worried?

Hard to say: If you have a soft tissue lesion anywhere that you have noticed, it bears observation. Lesions that are increasing in size, especially rapidly, or those associated with increasing pain, are concerns for malignancy. A painless mass which is constant in size, unchanging in appearance, and unchanged over time is likely benign. Lipomas are the most common soft tissue benign lesions; common and benign.