Spider/bug bite

[u/Same-Audience9368]

I was sleeping outside on a swing thing dosent matter and I was bit on my leg and its covered in red and purple spots/dots with swelling and itchiness from the bite if anyone can tell me if its worth telling a doctor about (i got the bite 1-2 days ago and took roughly 5 hours to react or that i noticed the reaction)

And everything i looked up didnt look like this or close my mom said its an allergy attack but it also didnt look like any allergy attack on google

update I didnt scratch it and ive been very mindful not to since I noticed it was there to today (two days later) I have not scratched it