Hello dear, I understand your concern. The infertility is said to be the when the pregnancy doesn t occur even after one year of unprotected intercourse. So as your marital life is one and half year the infertility treatment should be started. First both male and female partners are investigated for any problems. Female factors of infertility like irregular periods due to thyroid abnormalities, polycystic ovarian disease(PCOD),any tubal abnormalities like blockage ,any uterine anamolies are checked. Investigations like thyroid profile,Serum prolactin,hysterosalphinogram,ultrasound etc are needed. Male factors like ejaculatory problems and are checked and investigations like semen analysis and blood sugars to rule out diabetes are done. If all the investigations are normal and still there is no conception it is called unexplained infertility. If any abnormality is found treatment is given basing on that. Nothing to worry.As once the cause is treated the chances of pregnancy increase. And there are many drugs,techniques like intrauterine insemination(IUI ) are available.Artificial techniques(ART) are last resort. Avoid stress and anxiety as they cause hormonal imbalance and delay fertility. Relax.And kindly consult doctor. Hope this helps. Best regards....Dr.Srilatha