Hi, thanks for writing to HCM.
Based on your description, I suspect that your symptoms may be due to SUPERFICIAL THROMBOPHLEBITIS
(inflammation in the vein) which presents with pain, swelling and redness
Nothing to worry about this problem as this will resolve within a week or so
* An appropriate antibiotic for few days
& antiinflammatory medications like Motrin
* Moist heat fomentation
If your symptoms still persist after the above measures, consult your treating physician.
Hope this information is helpful. Good day