Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
Red itchy lump is a common finding after bitten by an insect. It is due to exaggerated response of immune system to toxins injected by insect in body.
Most bites and stings will heal on their own without a visit to a doctor. You could do following things to reduce swelling
redness or pain
1.Apply an ice pack to a bite or sting for 15 to 20 minutes once an hour for the first 6 hours. When not using ice, keep a cool, wet cloth on the bite or sting for up to 6 hours. Always keep a cloth between your skin and the ice pack. Do not apply ice for longer than 15 to 20 minutes at a time.
2.Elevate the area of the bite or sting to decrease swelling.
3.An antihistamine taken by mouth, such as
Benadryl or
cetrizine, would help relieve itching, redness, and swelling.
If problem persist visit nearby doctor
Don't worry you would be fine
Hoping your query is solved.