Does the tax penalty waiving apply to me? I wasn't employed till April 2018, and didn't have work coverage for medical until July 2018. I had no income before this job.

[MinhT]

Yes, you qualify for a short gap exemption as you were not covered for only 2 consecutive months: May and June. You are considered as covered by a health policy even if you are covered for only 1 day in the month.

In the health insurance, indicate the months you were covered and TurboTax will apply the short gap exemption automatically.