Should I try and call my ex today?

I recently started to talk to my ex again. We were chillin last week (went to eat and bar after) and had a good time, she told me she would be free this week so I called her twice to make plans, but I got no answer back. She called back but both times I missed the call. I texted her yesterday to see if she wanted to go to the mall today, but I’ve gotten no answer back. Should I call her?