No, you should not take Milcef 250. Milcef is an antibiotic (cefuroxime) designed to treat bacterial infections; it is completely ineffective against allergies or viral nasal congestion. Self-medicating with antibiotics, especially for just 2 days, is highly discouraged as it will not relieve allergy symptoms and can contribute to antibiotic resistance. Please do not restart this medication. Instead, consult a doctor to get an accurate diagnosis. They can recommend safe and effective treatments for your allergies, such as antihistamines or steroid nasal sprays, rather than unnecessary antibiotics.