Momsh, mahalaga ang trust in any relationship. With your 3rd baby, I think yung maternal instincts or intuition nyo po ay mas trained na. I would suggest you try another OB for you and your baby's benefit, lalo na heartbeat ang pinag-uusapan at kailangan nyong matiyak.
As long as in hindi ka na kampante sa OB mo, magchange ka na 😃Baka same lang din gawin ny next check up mo, madidisappoint ka na naman.