<s>[INST] I just got started on the birth control pill again after a year, and now Ive been having sharp random pains in my lowers stomach. Never happened before. I was also told a few months ago that my uterus isnt form completely so i have a low chance of getting pregnant or even being able to carry a child. I would like to know what this is. I am 16 years old. [/INST] Hi welcome to Chat Doctor forum.  Thanks for calling Chat Doctor. Forum.  After 1 year you have started taking pills, you got sharp pains in the lower stomach, Someone told you that your uterus is small and there are fewer chances of getting pregnant.  You told that you have started again after one year means you have used it previously. The pain may not have relation with the womb, it appears to be the pelvic inflammatory disease, urinary tract infection, or stones in the urinary tract.  It also may be the gastric pain due to irritation of the tablets, if taken on empty stomach, referred to lower stomach and felt so.  I advise you to consult a surgeon for diagnosis and treatment. You may need to have M.R.I.besides other routine tests.  Wishing for a quick and complete recovery.  Best regards. </s>