The Pole, who is also gearing up for the start of her French Open title defence next month, missed the Miami Open and Billie Jean King Cup qualifiers due to the injury she sustained during her run to the Indian Wells semi-finals last month.
"I'm not injured anymore, so that's the most important thing for me," the 21-year-old told reporters on Tuesday.
"I feel like I used that time in Warsaw well to rest a little bit and to not think about tennis.
"I have still been working out physically a little bit, and coming back to practising step by step. Here I am and I'm ready."
The three-times grand slam champion will begin her campaign at the WTA 500 claycourt event against China's Zheng Qinwen in the last-16 on Thursday after receiving a bye in the first round.
"It's the first tournament on clay," Swiatek said.
"I would love to play well, but I also know that I might be a little bit rusty because coming back from injury it's always a little bit like that.
"I'm keeping my expectations low, but for sure I want to play the best tennis possible."
The tournament in Stuttgart is the first since the WTA announced last week it would return to holding tournaments in China from September, having suspended operations there in 2021 following concerns over the whereabouts and safety of Chinese player Peng Shuai.
Asked about the WTA's decision to end its boycott, Swiatek said: "I just trust that the WTA is making the right decision.
"I hope that we, as players, can be safe no matter what country we are from.
"I don't have any kind of emotional influence because I have never even been to China. It's hard for me to say anything, but I just hope that WTA is strategically making a good choice."
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