Talk to Sexologist on Erectile Disfunction

We have been married for 2 years now. We used to have a healthy sexual life. In these 2 years there have been around 3 spells of erectile disfuntion. The first two lasted about 3-5 days maximum and my husband was able to recover from them on his own. He does usually get morning erections so it seems like this is more of a psychological issue. We have had a miscarriage right after the wedding and since then its been a year of actively trying to concieve with no results. The scheduling of sex every other day might be causing his erectile disfunction too, but this third spell has lasted for a month with maybe sex once or max twice. Its getting really difficult for us to understand what the issue is. Any sort of help from the doctors will be really appreciated to resolve the issue.