What Does Active Motile Sperms-30% On Semen Analysis Suggest?

i have got married before 15 months. my wife became pregnent atonce, but after 8 weaks the growth of pregnency stopped, so DNC carried out. now my wife is getting problem to became pregnent. my semen test is as under: quantity 2.5 ml sperm per ml 41%, active motile 30%, sluggish 45%, non motile 25%, morphology normal 80%, ph= alkline. what i will do? what medicine i will use?