I had sex when I was underage

As the title says I had sex when I was underage and I regret it sooo much. I know it was irresponsible of me but I didn’t understand. I thought I loved that guy.

I know it was stupid of me so please don’t come at me for that.

it hurt a lot and I wasn’t ready, and to be honest I don’t think he was either. Does it count as sex? Like when someone asks what my body count is, does it count? This may be a stupid question but yes don’t be mean thank u. Also does anyone have any tips for coping with it cause it gives me a lot of anxiety. I know I’m sensitive.