Bury manager Alan Knill was left considering what might have been after his side were held to a point by Bilel Mohsni`s last-gasp equaliser for Southend.
Damien Mozika slotted home Ryan Lowe's cross from the right in the 65th minute, but Mohsni headed home in stoppage time to claim a point from the 1-1 draw.
Speaking after the match, Knill said: "To concede like we did right at the end was very disappointing.
"We thought we had weathered the storm but we paid the price for not taking more of a lead when he had our chances.
"The opportunities were there but we didn't take them and that has ultimately cost us the win that would have got us back on track.
"We can't do much about it now though and at least we've got a point, so we must take some consolation from that."