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

### input:
HiDoctor.....I am 28 yrs old and m married for 5 yrs now and live in the netherlands......its been more than 2 yr i have been trying to get pregnant.....have gone thru all kinds of tests related to infertility in Holland and all our test are positive and everything is fine with me and my husband...am not allergic to any medicines till now... i lead a normaly life...i took a second opinion from my doctor is india and she suggested me to take some medicines for superovulation as i get my regular periods and mostly ovulate on the 18th day from my period .......she prescribed Letroz - 5mg  or Naturagest and lupigest - 300. is it ok to take these medicines? do they have any side effects? As i am in a colder country am a bit over weight (though my doctor said its fine) and am not able to reduce my weight inspite of being on proper diet and cycling, will this medicine have any effect in ganning weight? Normally when am in India I easily reduce weight and also am able to maintain it as I sweat a lot. please do advise me as I really dont want to miss out on any option cause of which i can get pregnant as its more than 2 years of trying and its sometimes depressing inspite of evrything being ok with me and my husband. Please help :)

### output:

Hi, I have one through your problem. When all the tests of the couple are normal and still they are unable to conceive naturally, then the condition is known as unexplained infertility. It is responsible for approximately 30-40% cases of infertility. In such cases, the stepwise treatment protocol is followed, the next step is taken when the previous one fails:1. Ovulation induction Chat Doctor.  Intrauterine insemination (GUI)3. In- Vito fertilization (IVF)Metro is an ovulation induction 