<s>[INST] Hello, Doc. Me and my husband wants to have a baby already, im only 19y/o and his 21. But we want to have a baby, weve been trying to have one the last 11months ago I think, until now, we are still trying. My question is, is there a posibility that a 19y/o woman and a 21y/o be sterile? Why and how? [/INST] Hi, Thanks for writing to Chat Doctor. Females once they start having menstrual cycle they become fertile and capable of becoming pregnant. Same with males. Around age of 14 to 16 they achieve puberty and sperms are produced. Before that age they will be fertile. For you, I suggest getting your follicular study which tell, you are producing eggs or not and timing. Also get your husband semen analysis done. If both are normal you can try normally to conceive for 3 to 4 yrs. If any abnormality detected it can be treated. Important is you need to have intercourse during fertile period. It will be 12th to 16th day for 30 days cycle. Hope I have been helpful. Regards </s>