Spitting up with blood and mucus

Hi mga mommies. Sino na naka experience sa inyo si Baby nag spit up More like lungad with tiny particles of blood and light green mucus. 3mos old na baby ko and Pedia said dahil sa ubo and sipon niya. Can you please share your thoughts about this po. Napapraning kasi ako. Thank you momsh❤️❤️❤️ # #spitup #blood