Dermatology Questions? Ask an Online Dermatologist.
It seems to be a lymph node. Since it is tender, it is due to infection if it can be moved easily with fingers. Take over-the-counter medication. If the pain is not be gone within a week, the pain is getting worse with the pain medication, or you develop fever, you should see your doctor to have a urine test, a test for discharge from the urethra if necessary, and ultrasound if necessary.
Usually infected lump nodes can be moved easily. Since it can't be moved, you should see your doctor to have an exam and a biopsy of it. It could be a lymphoma. But usually it is not tender or painful.
You should wait for a week with pain medication. If there is not any improvement, you should go to A&E. Otherwise you should see your doctor in December.
Tylenol, ibuprofen, naprexen and so forth.
It could be shingles if they become blisters. Soon after they becomes them, you should see a doctor to have anti-viral medications. If they are shingles, the swollen lymph node is due to them.
Yes, you should continue to use it for the pain.
They seem to the side effects. You don't need to worry about it. You should continue to take it and finish it. If the soreness/tenderness and the swollen node is not improved 1 or 2 weeks after you finish the antibiotics, you should see the doctor again.
Exactly where is the pelvic area? Any skin change? Did you have any surgeries? Any medical problems?
Is it possible that the pain comes from appendicitis? Did your doctor check the possibility? Because antibiotics make it better.
You should see your doctor to have the pain checked to see if it is appendicitis or not.
You should go to A&E because it will be a weekend in the UK.