Early signs suggest midfielder Craig Eastmond could be set for a long spell on the sidelines.
The 26-year-old was stretched off in added time of Saturday's match at Hartlepool with an ankle injury.
Minutes later Sutton equalised in the 95th minute to take a point but Doswell was left gutted with Eastmond's injury, he said: "It looks like he's fractured his ankle. It's terrible news for us
"Craig's a major blow because he's such a driving force for us. That's a massive disappointment.
"It's one we'll have to take stock of but there's not a lot of time to take stock in this league - Aldershot Tuesday, Ebbsfleet Saturday and then obviously in the FA Cup so we'll just have to reflect on that and see where we go."
For more coverage, reaction and some of the best moments from games going throughout the season, head to our social media channels on Twitter, Facebook and now Instagram.