Should I be concerned? (Baby movement)

I’m 21 weeks pregnant (4th baby) .. I’ve been under so much stress and anxiety. Dealing with relationship problems and now financial stress. Today I had a panick attack, I’ve never had one before. I have been feeling my baby move pretty regularly. But for the past almost 6 hours or so now I have not felt any movement and I am having so much lower back pain. Should I be concerned or am I overthinking it? I don’t want to call my dr office late like this and look crazy. Because I am going through so much.