<s>[INST] I have a hard lump on my lower back which the doctor said I should not worry about but sometimes I feel a little discomfort. What is it? Also I have noticed a little discomfort in my ovary mainly at night in bed but when I drink some water or get up the discomfort has gone. [/INST] Hi, dairy have gone through your question. I can understand your concern.  You have lump in lower back.  It may be due to some soft tissue tumor like lipoma, neurofibroma or dermatofibroma. Or it can be due some sebaceous cyst or other pathology.  You should go for fine needle aspiration cytology or biopsy of that lump. It will give you exact diagnosis. Then you should take treatment accordingly.  Your ovarian discomfort has no relation with that.  If you want to check then go for ultrasound abdomen to search other ovarian pathology. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>