First timer🍆😅

So my bf and I have been together for a while now, and he’s always respected my decision on when I was ready. Well last night on V- Day we were “playing” left me a ton of hickies but I wasn’t mentally prepared at all for having sex. I need advice for this entire process, how is it going to go or what should I do, i do think I’m over thinking honestly but any advice or tips help✨❤️