baby throwing up for over a week ☹️☹️

Harleigh

my 10 month old has been throwing up since last friday, dec28th... it started out just at night the first two nights.. then progressively got worse. then stopped for two days. now he's throwing up again. im pretty sure it's from all the phlegm and drainage he has, but idk for sure. if it is from that, does anyone have any tips for getting rid of that faster other than suctioning his nose, using the humidifier and giving him the benadryl he was prescribed. and if anyone has any other theories on why he'd be throwing up for that long, i'd like to hear those. i took him to his pediatrician and she didnt seem concerned about it.