Went on a date last week with this girl, everything went awesome. We ended up sleeping together, also awesome.

I ended up staying over at her place, but leaving early in the morning as I had to get to work.

We text back and forth, flirting the next day, and ended up going out again the other night. We had some fun, but she wasn't feeling well and wanted to leave. We ended up talking and she said she wanted to back off and take things slow.

Is this just a shit test? Any advice on how to proceed?