Dr Gunn, who is in the final year of foundation training in paediatric surgery, said she could be unemployed within months.
Speaking on the picket line in Oxford, she said: “I’m sleep-deprived, I’m overworked but I’m here because Mr Streeting refuses to give doctors what they deserve.
“I do not want to be strike, I want to be at work helping my colleagues.
“Unfortunately the reality is that many doctors like myself face the prospect of not having a job.
“So this time next year I may be at the job centre… because the government does not believe that training places are important enough.”
The government has said it would bring forward emergency legislation to fix the “choked recruitment system”.
It said it would create 4,000 more specialty training places and prioritise UK-trained graduates.
Mr Streeting added: “The government has done everything it can, from a 28.9% pay rise… and with a package on jobs, to avert this strike action.”
Dr Matt Bilton, a hospital psychiatrist on the picket line in Oxford, said: “The government… put an offer this past week but it was too little, too late, and so unfortunately we have no alternative.”
The BMA said resident doctors’ pay was a fifth lower than it was in 2008, taking inflation into account.
The strike is the 14th walkout by resident doctors in a long-running dispute over pay and other issues.
