So I'm at 12dpo, and for about the past week I have noticed that I have an elevated heart rate. I have been extremely fatigued at times, and during those times of laying around and watching a movie for 2 hrs, my resting pulse was anywhere from 90 - 120!! Today it has been around 88 - 100 all day. Normally, my heart rate is quite regular, and my resting pulse is in the mid 60's to low 70's as it should be. I know that when you get pregnant your blood flow immediately starts to increase, so I could see how this could be a possible indicator. I was just wondering if anyone out there has ever noticed anything like this.