A swollen and red penis for two days could be due to several causes such as an infection (like balanitis), an allergic reaction, or irritation from soaps, lotions, or sexual activity. Since this has lasted a couple of days, it is important to have it evaluated by a urologist to determine the exact cause and receive appropriate treatment.

Possible causes include:

• Bacterial or fungal infection causing inflammation and redness.
• Allergic reaction to a new soap, detergent, or medication.
• Physical irritation or trauma from friction or sexual activity.

What you can do now:

• Avoid any potential irritants such as scented soaps or lotions.
• Keep the area clean and dry.
• Avoid sexual activity until evaluated.

When to seek urgent care:

• If you develop severe pain, fever, or pus discharge.
• If swelling rapidly worsens or you have difficulty urinating.

Please consult a urologist promptly for a thorough examination and tailored treatment. If you have any allergies or are taking medications like Levocet M Tablet (an antihistamine and anti-inflammatory), mention this to your doctor as it may be relevant.To narrow down potential causes, we will need some more information.I understand you're concerned. Please tell me your age and gender.