Ulster hooker Tom Stewart admits “I don’t think I’ve come to the party well enough” and says the squad must have “honest conversations” after an underwhelming start to the season.

Successive draws with Glasgow and Munster after a loss to Edinburgh leaves Ulster winless in the United Rugby Championship before starting their Challenge Cup campaign away to Zebre next week.

Head coach Richie Murphy said he was “bitterly disappointed” after his side were forced to fight back for a 26-26 draw with Munster, while Stewart questioned his own contributions to the game in Belfast.

“From a personal point of view, I’m not happy with my performances about it. I don’t think I’ve come to the party well enough, I don’t know if it’s my preparation or the mental side to the game,” said Stewart, who captained Ulster against Glasgow and Munster in the injured Iain Henderson’s absence.

“It’s something I really need to have a look at and plan better or whatever it is, but I need to start understanding why that is the case.”

Stewart, who marked his seventh Ireland cap with a try against Japan over the summer, added: “From my own point of view, I need to properly watch back my intent in some of the collisions and my actual process around what I’m doing.

“Then I think we need to have some honest conversations this week within ourselves, with the team, players and coaches to see where we’re at.”

Ulster travel to Zebre on Saturday (15:15 BST) before travelling to South Africa for difficult URC assignments against the Bulls and Stormers.

For Stewart, Ulster “can’t shy away” from the shortcomings in their performances as they strive to kick-start their season.

“It’s hard, when you have a game like that you don’t want to watch it back,” added the 25-year-old.

“You don’t want to review yourself properly, you don’t want to look at the hard stuff, the nitty-gritty that you haven’t done well, but that’s where you find the fixes, the learnings.

“The hardest stuff you watch will be the most impactful stuff going forward.”