### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi. I have been trying to get pregnant for 3 years now and no luck. My period is now 2 weeks late which is occasionly normal However, I have been feeling light headed, experienced nausea, fatigue, adomenal cramping, sore nipples (very rare for me) and just feeling sick. I have taken one pregnancy that has came back negative. What else could be wrong with me if I am not pregnant?

### output:

My dear friend, If your cycles are otherwise regular, the missed period should point initially at the possibility of pregnancy. Moreover, you are having nausea, fatigue and sore nipples. The other symptoms you have mentioned are not specific to and most unlikely be due to pregnancy. If you have done your pregnancy test 2 weeks after missed period, it is most unlikely to give false negative results. Still, I would suggest you to get ultrasonography done. At this stage, it should provide you direct visual evidence of the fact. During ultrasonography, please request the doctor to have a look at the ovaries and the thickness of the endometrium (uterine lining). This will help to arrive at some diagnosis of the missed period. If you are not pregnant and the ultrasonography does not show any abnormal finding (and even if some abnormal findings are noted), you may get your reproduction hormonal profile done: FSH, LH, Estrogen, Progesterone and Prolactin. Usually, most of the women having regular marital relations conceive within first year, many of the remaining conceive during the next year. Now it is 3 years that you are trying for pregnancy, in vain. So I feel it is high time you and your husband start investigating yourselves for the infertility problem. The easiest and simple investigation to start with is semen examination of your husband. Report to the Gynecologist who will advise you the required investigations and follow up. I sincerely hope, you do not require any follow up for infertility.