"I was really scared after because I didn't realize how I felt until later..."
Serena Williams spoke out about the virus that cut short her appearance in the doubles alongside her sister Venus at Wimbledon last month.
Don't Miss: Win a FREE Nintendo Switch in our Giveaway
Williams talked about the incident that started to unfold while she was on court during the women's double match, in which the umpire was even concerned enough to ask the Number 1 women's tennis player in the world is she was well enough to continue playing.
Williams admitted she was fearful herself after illness struck at Wimbledon, an incident which sent shock waves around SW19.
Williams struggled to bounce or toss the ball on serves, double faulting four times in a row in the third game before the match was stopped.
"They just said I was really ill, and really under the weather and I just wasn't doing very well," Williams said.
"I was really scared after because I didn't realize how I felt until later and it's just, you know, 'Serena, keep your time, you will have the rest of your life to keep playing tennis hopefully."
She would have continued had not Venus insisted she get off the court.
"She kept saying, `walk off the court, I'm the older sister and I say you have to leave."' Williams said. "I'm feeling really good right now and I'm happy to be here."
Williams was intending to play in Bastad the following week after Wimbledon, but after being checked out by medical staff doctors recommended she not leave her room. She spent the next three days getting much needed rest before resuming her full schedule.
"I heard a lot of the response weeks and weeks later because I didn't leave my house or my bed for a few days," Williams said.
"But by the time that happened when I read or heard about it from other people I was just like, 'Oh really, I already moved on.' I was working out and starting to try to play again."
Williams also made the most of three weeks off with a holiday to help her recover from the virus.
"After Wimbledon I stayed around in Europe because I was gonna play in Bastad, and I feel so bad about not being able to play there," she said.
"I ended up going on what I called 'vacation,' which is like when you have fun in the sun but you practice in the day, in the morning. I tried to practice very early so I can have fun later."
Williams said she will undergo a series of tests at the end of the season.
"I was really ill," she said. "I got to thinking about a lot of things and because of family history, I'll get the tests done and we'll go from there."