Maybe your husband is listening too loud.
Get a sound level meter. OK hardware meters are under $50 on Amazon. There are scads of free/cheap SPL meters for cell-phones. Calibration is dubious but you just want to compare your voice loudness to others, not put an exact number on it.
On Android I have used:
“Sound Meter” by “Smart Tools” (but it just posted two offensive ads at me)
“Decibel X (Pro)” by “SkyPaw” (over-kill, and I found “Pro” worth the few bucks)
Bottom needle-meter shows the current sound level. Upper graph shows the last 60 seconds. In an average conversation, this will tend to show both talkers, and how far above the ambient noise they speak. Or whatever sound! Siting here in a quiet house, sound is 32(dBA SPL) but when I type furiously it hits 53.
Occlusion plays a part but you also get clues by sound from throat to headbones or inner ear, breath level, vocal cord sensation. If you have been HoH for a while it may take time to re-learn these rarely noticed feelings.