Help pleaseeee

I’m talking OPK’s (no LH surge yet) but according to this app, it’s my fertile window... and so this morning I was feeling extremely horny (WAY more that usual 🤷🏻‍♀️) so I woke my hubs up and BD’d. We were going at it for like 40 minutes (we both don’t like long sex lol) and he just couldn’t finish. He said he couldn’t feel it coming at all, and he got really discouraged about it and felt bad because we want a baby so bad.

Could something be wrong with him? This has happened before but only like twice. I don’t know what to do to help him. What could I do?