My girlfriend doesn't call me by my pet name anymore?

The girlfriend and I are going through some problems - so I am moving out. Now she doesn't call me baby, honey or sweetie anymore. Just by my first name. Like I got her a gift and she just says Thank you [my name]. Which is weird. She still kisses me.
Updates
+1 y
The question is, since our relationship is having some issues, is this a bad thing or nothing to worry about? If your one and only started referring to you only by you first name when they previously called you a pet name, should that be because for alarm?
My girlfriend doesn't call me by my pet name anymore?
Post Opinion