Ladies

Ladies quick question I can't stop thinking I been trying to get prego after my son for 4 years my hubby went to do a sperm test the results come out Friday but I am so nervous because scared they would say he can't have anymore kids god for bid he is to nervous I mean I had my son was with out no problems and now he smokes a lot he cut back tho because of his health and because he wants kids my question is if u can have one kid with out problems getting prego u Can have many more right ? I am so nervous I feel like crying I want more kids