Carlos Corberán provided an update on the fitness of three Albion players following the 2-0 win over QPR on Tuesday night.
Cedric Kipre limped off in the closing stages, while fellow defenders Semi Ajayi and Conor Townsend weren’t involved at The Hawthorns.
The boss revealed Kipre has suffered a knee injury and will be assessed further on Wednesday.
Corberán also described Ajayi’s complaint as an ankle one, while stating Townsend’s absence was down to sickness.
He said: “It’s difficult to face a situation when you are having a lot of injuries.
“It’s true that we’ve had a period where we haven’t had some of the attacking players who are important for us.
“Semi Ajayi, when he was playing in the last ten minutes of the Plymouth game, he turned his ankle. He suffered the same injury as he had before the international break.
“Tonight, Cedric Kipre, in one action has turned his knee. It looks like it’s going to be a serious injury.
“We will know more tomorrow, but we know it’s not going to be a question of days. It’s going to be a question of, hopefully weeks, but unfortunately, maybe months.
“Conor Townsend was sick tonight so he wasn’t involved. He’s not injured.”