If in doubt, change some water. Always a good starting point.
Those 5 in 1 / 6 in 1 test strips dont normally include an ammonia test. Thats usually the first sign of waste in your tank. Testing after all the water changes wont tell you much though, except that the water is ok after the water change. Testing after 12/24 hours will tell you more about whether your cycle is still good.
But, you did all the right things. You probably wont have an issue. Rinsing substrate will lose you some beneficial bacteria and you may see some spikes in ammonia and/or nitrite in your test, so keep up with daily water changes for a few days after your emergency maintenance, and keep an eye on things for a short while to ensure everything is stable.
Dont allow your substrate or filter media to dry out. Keep them in a bucket of dechlorinated water if you cant get everything out, rinsed, and all reset up in one go. Beneficial bacteria will start to die off after a couple of hours of being dry. A few days if kept wet. A few weeks if kept wet and oxygenated with no ammonia for food.
I assume your QT isnt cycled. So if the fish are in there for longer than a day, change some water daily there too.
Keep us informed on how things go.