You can keep the plan that you had through your job under COBRA rules, but your former employer is not required to continue paying a share of your premium. Government subsidies are currently available to cover 65% of the premium for 15 months. But once that expires, you'll need to find insurance on your own.

If you are unable to buy insurance because of your preexisting condition, you will qualify for HIPAA guaranteed issue coverage. Basically that's a high deductible health plan at a higher that average rate.