is there anyone who is having same problem, just done 3rd month and got af again so annoying. ive been on 50mg and had 21 day test which come in at 1st 31nmol/l 2nd 38nmol/l 3rd 34nmol/l. only 1 tube that works and had the test to check its clear in feb. so no probs there. im really hoping to get a result but not looking good :-(. my gyno has just just given me another 6 months supply and just said hope it works. its my gp wh does the 21 day test.