I dreamt that I was washing my face and I saw a lot of black ants coming from my mouth
Dreaming about ants can represent hard work, diligence, and productivity. However, in this particular case, they are coming out of your mouth, which can be interpreted as a feeling of not being able to express yourself effectively or having a fear of expressing your thoughts and opinions which are causing a hindrance in your daily life. Perhaps, you are suppressing your emotions, hiding your feelings, or not speaking up to someone who might have offended you. It could also represent an overwhelming fear of someone undermining your ability to speak. The dream may be advising you to open up, be honest, and communicate before the situation gets worse.