Panic attack - 14 weeks

Im just over 14 weeks and i had my first ever panic attack whilst pregnant today. (Used to.get them before but not recently) anyway i got up in the morning to go about my day and out of no where i started getting palpitations. After about 2 mins my heart started racing and i came over all hot. I didnt know what to do with myself it felt like i wanted to just run away. I was so conviced i was having a heart attack it was awful. Ive spent all day now on edge in case it comes back.

Anyone else had this? Please give me some advice so i.can stop panicking?