LOS ANGELES >> Will Smith had a rough day behind the plate last Tuesday in San Francisco. But he didn’t realize it until Thursday.

That’s when Smith started feeling “headaches, a little dizziness — typical concussion stuff.” He went on the injured list on Saturday.

“I’m pretty sure it was that second game in San Francisco,” Smith said Monday. “I took three foul tips to the face. That’s kind of a lot for a game. It’s usually one, maybe two.”

Smith said he felt “totally fine” when he played Wednesday and the symptoms “just kind of popped up” during the off day Thursday.

The symptoms are “nothing too crazy at all” now, Smith said, and he went through a full workout before Monday’s game. The next step will be to see how he feels the day after that workout.

“It’s going to be a progression so we’ll see,” he said. “We’ll see how I recover after today. Coming in tomorrow after going through a full workout today. Just kind of day by day.”

Smith said he has never been diagnosed with a concussion before. He will be eligible to come off the IL for Thursday’s series opener in Chicago and does plan to travel with the team. But he also doesn’t want to come back too soon.

“That’s my No. 1 priority, to get back to 100 percent. I don’t want to rush this,” Smith said. “I think there are plenty of things that you can play through and deal with. But head stuff, concussion stuff is not one that anyone should mess with and I especially don’t want to mess with that.

“We’re just kind of playing it safe. I don’t want to get whacked again in the face. Hopefully a couple more days and we’ll be in there.”

Rehab start

Right-hander Tony Gonsolin joined the Dodgers in Los Angeles and threw approximately 30 pitches in a bullpen session, then went through defensive drills to further test his injured left ankle.

Gonsolin is now scheduled to join Triple-A Oklahoma City and make a rehab start on Thursday with a target of four innings. The expectation is for Gonsolin to make at least one additional rehab start next weekend before he will be evaluated for a potential return to the Dodgers’ rotation.

Meanwhile, Ryan Pepiot has yet to begin a throwing program. Pepiot opened the season on the injured list with a strained oblique muscle in his left side.

Roster move

Before Monday’s game, the Dodgers sent right-hander Andre Jackson to Triple-A Oklahoma City and recalled left-hander Justin Bruihl.

Bruihl opened the season in Triple-A after spending parts of the past two with the Dodgers. He didn’t allow a run in six innings over five appearances with OKC, giving up just two hits and a walk while striking out nine.

The addition of Bruihl gives the Dodgers three left-handers in the bullpen (with Alex Vesia and Caleb Ferguson).

“With this (Mets) lineup, there’s some lefties that we want to make sure we’re equipped to handle and in that next series with the Cubs, the same thing,” Dodgers manager Dave Roberts said.

Jackson gave up eight runs on 12 hits in 8 1/3 innings with the Dodgers this season. He gave up four home runs to the Cubs in two innings on Friday and the Dodgers believe he was tipping his pitches, something he can work on more easily in Triple-A.