Met her about a month ago, we've had sex twice. Wednesday was my day off so we went to the beach in the morning, afterwards I invited her to come over but she had to finish up some uni related stuff. I dropped her off early afternoon with her thanking me for the day.

Since she couldn't come over, we said we'd meet again the next day. Fast forward to yesterday, I text her a standard 'how are things there' text around lunchtime and I haven't had a reply in the last 24h. Needless to say we didn't meet up.

What do I do now? It's really odd for her not to reply. Would it be ok for me to send a text asking if everything is ok since I haven't heard from her?