Matty Hughes may be recalled from his loan spell at Chester as Fleetwood Town’s striker crisis deepened.
Martin Paterson limped off in the 24th minute of Saturday’s 1-0 defeat at Swindon Town with what is suspected to be a serious hamstring injury.
Alexander said: “It didn’t look good, I’m guessing it’s not going to be a quick one.
“We don’t have much luck with our strikers.
“We’ve got Matty Hughes doing well at Chester who we might recall. We’ve got Jamie Proctor in the squad coming back from suspension. We need them.”
Despite leaving empty-handed Alexander was proud of his charges at Swindon. He said: “It’s very frustrating and I’m so disappointed for the lads.
“The workrate and discipline they showed was superb. We hit Swindon on the counter attack two or three times in each half.
“It’s what we spoke about, what we wanted to do. I feel we had the better chances over the course of the game.
“We know Swindon are a good team, they are expansive, they try and open you up. Not many times did they get through us, that’s testament to the discipline of the players. They were superb.
“I can’t sugar coat it, it’s a hard one to take - four minutes from time, a set piece.
“It happens in all levels of football but we’ve spoken to the boys and said we’re so pleased with them.
“We’ve come into League One, we’re still in touch with the teams above us. It’s just a fine margin we have to improve on.
“If we were miles away there’d be a lot to improve but we’re so close, you can see that.”
Goals are becoming a big issue for Fleetwood, who have scored just once in their last three games.
“Pato is devastated more about missing the chance than the injury,” said Alexander.