I havent been diagnosed yet, but I have been to my doctor lots of times and lots of test which come back normal. I'm 5 months postpartum and this started about 2 months ago or so. When getting up in the middle of the night to fix my son a bottle my heart rate will go above 100 frm 60s 70s, also like today I took a nap and my heartrate lying down was 74 and when I stood up it went to 110. The biggest thing that makes me believe its pots is I also get blood pooling pretty bad I believe. Could you guys tell me what you think?