Could be baby changing positions,or moving slightly, i also did abit of reasearch into this as i thought mine did it at one point earliwr on and freAked me out, read alot about chambers off heart developing at different stages, and like gem said babys hb can change so quick in short time, also read its more Likely to be the doppler not picking it up cant quite remember what it said now but something along the lines of the sound you hear on doppler isnt actuall babys hb its the doppler copying babys hb and relaying on doppler, that may be wrong how i have put it so dont take my word for it, as cant fully remember, maybe mention it to midwife see what she says, i stopped using doppler now, but when i did use it i tryed to just listen to hb and not read into it to much because we dont no whats normal and whats not, the midwife listened and said sounds fine so thatl do me!x
