First sparring session felt off ,am I overreacting?

Today was my first ever sparring session in Muay Thai/kickboxing. I told my coach that I didn’t really know how to block punches yet, but he still paired me with someone way more experienced. He said to keep it very light, but they were hitting way harder than that. My headgear kept moving, I got hit in the eye multiple times, and my head started hurting pretty bad. It didn’t feel like controlled sparring more like I was just getting hit for real.I also pointed it out and asked them to go lighter but nothing changed.Now I honestly feel turned off by sparring. I love training and I’m not afraid of hard work, but this just felt wrong. Am I being too sensitive, or was this just a bad first experience?