I am a 31 years old male. Me and my wife have been trying for a baby since last 6 months without any success in the month of July last year I had done a semen analysis and the result showed 48mil/cc with 40% progressive motility with normal morphology. I again retested in the month of january ,and the count has reduced to 18mil/cc but other parameters have remained same. What is the next step I should take going forward.