Just had a very hot bath as I felt quite cold and wanted warming up- I am taking Warfarin. After being out of the bath for 10 minutes started to feel a bit faint and breathless with a fast heart rate of up to 104 (usually about 53 ) don't think it's AF ( I had an ablation in June and the last episode I had , which was fairly mild , was in early in September. I took my B.P. and it's 90 / 52 . I take 5mg of Bisoprolol daily. Do you think I should see my G.P and ask for it to be reduced or is it just a one off because it was a bath that was to hot? Anyone had similar ?