You still need Form 1095-A. The hardship exemption will apply until the month you began working.
It depends on where you signed up for the medical insurance. Go to healthcare.gov, or to the state Marketplace, wherever you signed up.
See: IRS: What should I do if I don't receive a Form 1095-A?
If your employment status was not updated with healthcare.gov or the state Marketplace, part of the Premium Tax Credit must be returned. This can be done on your tax return.
For more information, see: Premium Tax Credit: Claiming the Credit and Reconciling Advance Credit Payments.
Once you have Form 1095-A, see this article regarding reporting it: Where do I enter my 1095-A?
