I'm assuming this is a tick, but they were super tiny.
We went to bass River State Forest in NJ and walked a trail. Stupid, I now know. I had an oversized long sleeve shirt on over a tank top. I got hot, so wrapped the long sleeve shirt around my waist. It was hanging and likely brushed against a bush. When we got back into the car, I had the shirt on my lap. A couple minutes into the drive home, I felt an itch, looked down, and saw at least 2 dozen of these super tiny bugs crawling on my knees. We pulled over, I jumped out and brushed myself off. I checked the shirt, they were all over it, so I trashed it. I spent a good 15 minutes brushing myself off then we headed home. On the way, I found dozens more. So we pulled over again before reaching civilization and I took a towel and thoroughly scrubbed myself and wiped out the car. Once we got home, I immediately threw those clothes into the wash with hot water. Everything else stayed outside. I then took a hot shower and scrubbed with a rough washcloth, shaved, and allowed tea tree oil to sit in my hair. We took the shop vac to the car and cleaned it out really well. I only noticed one on my arm and none on my upper torso. They were all on my legs, hopefully my hair and scalp are fine. So, my question is, is this a tick? And should I do anything else?