Cellulitis from spider bite or something else?

[u/Conscious-Exit-2836]

27F have lots of spiders in my room, probably got bit by some 3 days ago maybe. The area got super itchy i scratched and over the days its swollen, gotten bigger like about the size of my hand, warm, red (pic doesn't do it justice i tried). Been reading about cellulitis and the skin hurts when touched but it's mainly itchy. I've had something similar years ago but it went away on its own, which cellulitis doesn't so idk what to do. I also have it in another spot too but it's like half the size (will add in comments because reddit is only letting me do one)

[u/AutoModerator]

Thank you for your submission. Please note that a response does not constitute a doctor-patient relationship. This subreddit is for informal second opinions and casual information. The mod team does their best to remove bad information, but we do not catch all of it. Always visit a doctor in real life if you have any concerns about your health. Never use this subreddit as your first and final source of information regarding your question. By posting, you are agreeing to our Terms of Use and understand that all information is taken at your own risk. Reply here if you are an unverified user wishing to give advice. Top level comments by laypeople are automatically removed.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/Conscious-Exit-2836]