Christian Pulisic believes Chelsea must show character to snap out of their current form slump.

The Blues have lost two Premier League matches on the trot and could only muster a draw against Valencia midweek in the Champions League.

And with a hectic December ahead, Pulisic admits his team must turn things around quickly.

"Absolutely, tough times really test your character," Pulisic said after Saturday's 1-0 loss to West Ham United. "Things aren't going amazing, I would say this isn't the worst thing so we just have to go on but now luckily in this league, we get another game midweek so we get a chance to redeem ourselves.

"It was a pretty crazy game midweek and then coming here we really wanted a good result, we came out with a lot of energy and did some things well but we just didn't have that finishing touch. It felt like a little something was missing.

"In the season, that is what happens, there are ups and downs. We have had a few months now where people have said how well we've done and how everything has been going great, and I wish it would stay like that the whole year but it's not the case, so now a couple of tougher results and we just have to go try and turn it around."