First panic attack in 5 months

21 f, 40mg Prozac for 2 years, I haven’t recently gotten to panic attack in so long but yesterday after work, I came home and I was really tired and then I had a huge panic attack. I was on the floor shivering. I was so scared and felt like puking. I felt really dizzy and then I woke up this morning and I still feel anxious and my stomach feels tight.

I haven’t had one in so long, so now I’m wondering, is it normal to get panic attacks out of the blue which is super strange for me because I used to have them every day. after not having them for a while it’s terrifying to have one randomly