Swollen very painful red bump, getting worse throughout the day. is it a spider bite or an ingrown hair? no open sores or anything either just a large

Difficult to say on: this forum. This sounds like an infection; I would recommend you apply warm compresses and have it looked at by your doctor. It may have started as a bite or an ingrown hair, but now seems to be infected and may need treatment prescribed. If you are a Health Tap Prime member, you can also consider starting with a consult with one of us there.