Suspected Gingivitis?

Hey, I think I’ve been experiencing some mildly inflamed gums (pretty painful if I move my mouth in certain ways or irritate them). My gums were super, super red and swollen a couple days ago, but I’ve increased my dental hygiene a lot in the past couple days (brushing after every meal, flossing a lot more often) so the redness and puffiness has gone down a fair bit, especially in the front of my mouth. I suspected this was gingivitis after some very elementary google research, but my gums haven’t bled throughout any stage, which seems to be a big symptom. Wondering if it could be something else and how to treat it? I can’t afford to go to the dentist right now so preferably at-home treatments unless its that bad…