Racing/palpitations??

Saima • 32 year old mommy to three great boys! Step son Vladi (9.19.09), Eddie (10.23.13) and newest addition Ozzie (7.31.15)!
Got my bfp 8 days ago- dr apt tomorrow to confirm, according to glow I am 5w3d, problem is I have been having crazy racing heart beat. Episodes happen and last thirty seconds to ten minutes, 2-20 times per day. It was bad enough on Thursday I left work early. Anyone else have similar?