Feeling nervous

Grace
2 years we have been trying and just found out he has a low sperm count and low motility so I'm looking into the options and feel this could be one of them I just read some of these and have now scared myself but I can't wait to be a mum as well as he cant wait to be a dad so what will be will be I'm just wondering what the process is I have rough idea? Does it take long? What are the chances not to fall on first time?