If the Republican health care bill makes it through the Senate and President Donald Trump signs it into law, it could hurt people with pre-existing conditions.

Many residents of western Connecticut say that makes them nervous.

Under the current health care rules of the Affordable Care Act, people cannot be charged more for coverage if they have pre-existing conditions. The Republican bill, which just passed in the House, would allow states to opt out of that requirement.

Connecticut lawmakers say the state is unlikely to choose the waiver, but a national ripple effect could still hurt residents here.

The lieutenant governor's office says about 100,000 residents could face higher premiums, and thousands of other people who use subsidies could lose federal aid.

And, as the bill shifts the costs of Medicaid to the states, it could also mean that Connecticut could lose up to $1 billion in federal money.

Many of those who are insured through the Affordable Care Act say the numbers are far from comforting.

"In the long run, it's the last thing you need -- just being worried about what's going to covered next year, what's not going to be covered," says Babar Sheikh, of Norwalk. "What do you have to plan for?"

Those at the Norwalk Community Health Center are also worried. They say there are many things in the bill that are uncertain and that creates an uncomfortable situation for them to be in.