Whats my girlfriend going doing/going through/thinking?

Hey guys, I wanted to get your opinion on what SHE is thinking. My girlfriend and I have been dating for a couple of months. I recently took her virginity and she was fine and all happy after we had intercourse.

Currently she has been very short and very snappy and tired and groggy with texts and seeing her when I went over. Im not sure if she is PMSing or what but she was like this too this previous month. (she gets very emotional and snappy when on her period). But anyways, why isnt she texting me?

I texted her last and she didnt even respond and she has been calling me hun, honey, babe and baby and gave me kisses the last time I saw her. Is everything ok? Or am I overthinking it?