The Daggers have only won twice in their last seven League Two games but a third against the Robins could see them move back into the automatic promotion places.
Defender Will Antwi suffered ankle ligament damage early in December and is still out while midfielder Stuart Thurgood remains on the sidelines as he begins a three-month lay-off following a knee operation so on-loan Gillingham midfielder Adam Miller will continue.
Meanwhile, Still was not too downbeat despite the loss at Sixfields, saying: "I didn't think it was a game we looked like losing. If the penalty goes in then I'm sure we'd have gone on to win the game.
"Neither side created too many chances. We've always been solid and competed well away from home and we did that again.
"I never get too high when we win and I'm not going to be too low after we lose. It's just good to be back playing the game because like most sides we've not been able to train regularly."