Girl I’ve been seeing over the past couple weeks (we have a history)seemed a little distant the past two days. Am I overthinking this?

I used to date this girl for about 2 months last year. It didn't work out because of her job. We talked here and there after. I dated someone else.

She texted me here and there,asking if I was dating anyone because she realizes how clouded her judgment was and how her job messed up lots of things in her life.

About 3 weeks ago we went out and had an AMAZING time. Had drinks, talked for hours, she seemed very interested. We made out,hung out a few days later,spent 10 hours together,had sex. It was VERY intimate and we talked a lot,really connected. Talked about future plans.

We went to a haunted house Wed. and had so much fun! Had drinks, I joked that if she paid rent she could stay at my house, and I teased that i'd have to think about it because that's a lot of time to spend with her (she loved it), she said here are all the pros of that (sleeping together, cooking, etc). We joked that it would be hot to work out together. I had to work the next day so I took her home and we cuddled, no sex, for a little but I had to drive home (it was 1 am).Felt very intimate.We told each other how much we liked spending time together.

Got a text next day saying how much fun she had. Texted her to hang out saturday and she didn't get back to me late friday, saying she'd let me know. Saturday she just wanted to stay in for the day but said maybe tomorrow.

Overthinking it?Past couple days there's a dropoff in communication. Maybe we are hanging out too much?Did I do something wrong here?