One testicle

I know this is a bit personal but I guess this entire app is personal lol. Has anyone conceived from a man who congenitally only has one tesicle? His MD told him when he was younger that he shouldn't have a problem but I'm just really worried. We haven't gotten to the point of sperm testing or anything like that but if we don't get a BFP within a year then that will be our next step.