Hi Seraphim - Hello and welcome!
Sorry hubbys ok on that one, but I hear that you really can improve things , apparently it takes 3 mths to refresh completely, (eg life cycle of a spermy!) so well worth googling things that can help. My hubby works for a supermarket on nights, refilling the chilled sections, so I reackon that has always helped us, as his swimmers never get hot....
Have you been trying long? What did the results say re the sperm? Have you had any other tests done ?