Hello Sir Iam 34 Years Old We R Try For

Hello sir iam 34 years old we r try for pregnancy for that iam taking the semen analysis the result was 5mill/ml then i take an advice from my doctor use of clofert tablets for 3 months and after 3 months my sperm count was 43 mill/ml is it enough for pregnancy ??? Bcoz my doctor suggest that use fertisure-m for 1 month to improve count but iam getting fear about is increase more/decrease???and what is the minimum sperm count for pregnancy??may i use these fertisure m tablets/not??