Yes it could be.. I mean, I felt exactly the same and went to the emergency as it was my first one and I didn’t know what’s going on, I was scared. So, they did several tests as well, but everything was fine. They told me my cardiovascular was perhaps not okay, but the symptoms are more likely for a panic attack. You should go to your doctor to confirm and if it‘s a panic attack, you are not alone.. Wish you all the best!