Please guide. La 40 mg for 10 days!

Yesterday i went to play cricket after soo long.. i got exhausted.. i came back home, took bath, had lunch and as my whole body was paining, i thought of taking an pain med, since i am allergic to pcm..i usually take zerodol, but since it was not available i took ibuprofen 400.. after taking  ibuprofen, few mins i started having a feeling that my pulse is getting irregular, on checking my pulse i found that my pulse is getting fast then all of a sudden slow but i was having no pain but i was very anxious and confused as if something bad is happening to me , so i thought i should visit an ED, attached ecg (first) was then taken at around 4:30 pm, and asked to get admitted for overnight observation. I am a patient of anxiety, i am on anti anxiety meds since 2 years, i have also attached ecg(second) taken today morning at 6 am and BP was around 150/100,  Plz tell me wat is wrong with me. Right now i am feeling OK. Hospital has discharged me and has prescribed ciplar LA 40 mg for 10 days