Kieron Dyer accepts West Ham could well appear "doomed" if they do not beat Blackpool at Upton Park on Saturday.
Avram Grant's men remain bottom of the Barclays Premier League following the 2-2 draw with West Brom at Upton Park.
"We said Birmingham was a 'must win' game, but against Blackpool we need three points otherwise people will start saying we might be doomed," the midfielder reflected.
Although the Irons fell behind to Peter Odemwingie's penalty, they rallied after a 25-yard strike from Scott Parker and were ahead at the start of the second half through Frederic Piquionne's spot-kick. However, the French forward missed a great opportunity to make it 3-1 before Pablo Ibanez secured a share of the spoils for the Baggies.
It was another missed opportunity for West Ham, who had thrown away a two-goal lead at Birmingham last weekend.
Grant continues to command the backing of co-owners David Sullivan and David Gold, but for how long remains to be seen.
Dyer accepts another failure against the newly-promoted Tangerines and things would look bleak.
"Blackpool are going to come here and have a right go at us," he added. "We have to be confident and match their desire. It is all about playing with no fear. I am a confident player and I don't let things affect me, but you can see that some players are affected.
"Again, as soon we went ahead we nearly got the third goal, but then we kind of went into our shells.
"You could sense it was just a matter of time that they were going to score and it can't be like that. As soon as we get in front the attitude is to protect what we have. We have got to stop making these mistakes or this is going to cost us dearly."