Mucus accumulating around lips

Hi, Im a 21 years old guy and I have a really annoying problem. Since like 10 years old I have had this problem that mucus starts to accumulate around my lips that it gets embarassing to speak or open my mouth. When I exercise there is also some white stuff. I have been a mouth breather forever but nowadays I try to breath with my nose. But I feel like I can't breathe so well with nose.At least this helps the problem but has not get rid of it. I also have a feeling in my mouth all the time that it's full of saliva and mucus. When I used to play football when I was 12 years old I had hard time breathing and sometimes I had a panic that I can't breath. Nowadays I don't get that feeling anymore but I feel like I can't breath with my nose when I do even little exercise.

I don't know if this is related but I also have this problem that when I eat something that is usually labeled as unhealthy my face starts to itch/sting. It lasts about 30-60 minutes. Also when I eat unhealthy I start to feel stupid and talking is hard and pronouncing words. But the itching is only light but its annoying and I usually get small skin colored bumps there. Also my arms, chest and back itch sometime but randomly. I have an Acne but its not regular cyst and zit Acne I just get these small skin colored bumps. They dont clearly look like bump, just raised skin, like a super small hill. I also have redness on chin, around nose area and nose.

Thanks in advance and sorry that this post is little messy or confusing I wrote this oon my phone. Tweet