Would this be panic disorder? D:?

So this morning I didn't eat and I had a Loca Moca Monster (for those of you that don't know what it is, it's a monster energy drink mixed with coffee) anyways I didn't eat for most of the day and I had an iced mocha about 2 hours after I had the monster. Then when I got home about 2 hours later, I had some veggies and grapes then MORE coffee. As you can see I'm getting addicted to coffee. >:/ anyways I had these fudge shortbread cookies later and fruit flavored mentos. A little while after, I was exercising but I was pushing myself like crazy on my stationary bike, going about 30 mph for 20 minutes. I started to feel weird afterwards. I took a warm shower then out of nowhere, I noticed I was still feeling weird. I started to freak cause I thought something bad was happening to me. Suddenly, my heart was pounding and racing really fast and I was getting lightheaded and felt like I was having hot flashes. Then my face, hands, and feet started to get all tingly and cold. And I was having this prickly feeling in my arms and legs. This went on for HOURS! could I have been having a panic attack?? I'm kinda feeling the symptoms still :(