If you suspect you have an allergy to contraceptive pills, the first step would be to understand the common symptoms of drug allergies and then identify if these symptoms occurred after you started taking the birth control pills. Here is a step-by-step guide that can help.

Identify Allergic Reaction Symptoms

• Rashes or Hives: Drug allergies can often lead to redness, itching, and welts on the skin.
• Swelling: The face, lips, tongue, or other parts of the body may experience swelling.
• Difficulty Breathing: Allergic reactions can lead to shortness of breath, wheezing, or difficulty inhaling.

Establish a Link with Contraceptive Pills

• Timing: The symptoms of an allergic reaction usually occur shortly after taking the medication. If these symptoms occur every time you take the pill, it's likely an allergy.
• Exclusion of Other Causes: Allergy-like symptoms could be caused by many other factors. If your symptoms persist even after stopping other potential allergens, the contraceptive may be the issue.

Confirm with Allergic Test

• Medical Consultation: If you have identified these symptoms and believe they're linked to your contraceptive pills, consult your healthcare provider. He or she can confirm your suspicions and guide you on the next steps.

Remember, it is crucial to seek professional medical help when dealing with drug allergies since they can result in severe reactions if not correctly managed.