Hello, thank you for putting your trust in our site, my name is Dr.Soliman and I will be glad to answer your question. what you did experience last night is called palpitations which is a rapid hard heartbeats, and the most common cause for heart palpitations is anxiety. Other causes include; hyperthyroidism and arrythmia, and since you don t have any other symptoms suggested for hyperthyroidism or a cardiac issue then mostly what you had is just anxiety cause you probably stressed out or overthinking about a particular issue, and you will need any treatment just avoid drinking caffeine and nicotine which my aggravate the palpitations and try to relax yourself and maybe you can use anti anxiety medication like Xanax or Valium. I hope this answer fulfill your query and if you are satisfied with the answer please consider giving 5 star rating , and feel free to ask any additional questions and I will gladly help you with an answer.