u/Disastrous-Gap-8402

I have had gingivitis for many years and it was only today that I realized I'm not supposed to rinse my mouth after brushing. However, I've tried keeping the toothpaste in my mouth, but the continuous chemical taste forced me to rinse it out. I'm trying to improve my dental hygiene because I haven't taken it seriously for most of my life and it's affected my oral health. Moreover, I have ugly yellow teeth, and I want to know what's a good remedy for making it whiter. I do floss every night by the way.