Hello,
A blister or ulcer on one tonsil during pregnancy may be caused by viral throat infection, an aphthous ulcer (mouth ulcer), tonsillitis, or local irritation.
Most minor ulcers heal within 7â14 days. However, a blister on the tonsil cannot be accurately diagnosed without examining the throat.
Since you are
pregnant, it is important to identify the cause before starting medication, as not all throat treatments are suitable during pregnancy.
A single ulcer does not necessarily indicate a serious infection.
Next Steps
Consult a general physician or ENT specialist for a throat examination, particularly if swallowing is painful. Gargle gently with warm salt water 2â3 times daily. Maintain adequate hydration and consume soft, easily swallowed foods. Paracetamol is generally the preferred pain reliever during pregnancy, when necessary, at the lowest effective dose for the shortest duration, after confirming with your treating doctor. If bacterial tonsillitis is diagnosed, your physician can prescribe a pregnancy-compatible antibiotic when indicated. Avoid self-medicating with antibiotics, oral ulcer gels, or medicated throat sprays without medical advice.
Health Tips
Avoid very spicy, acidic, or excessively hot foods that may irritate the affected area. Do not attempt to burst or scrape the blister. Avoid ibuprofen and other NSAID painkillers unless specifically prescribed during pregnancy. Seek medical attention if you develop fever, increasing one-sided throat swelling, difficulty swallowing liquids, drooling, muffled voice, or breathing difficulty. My recommendation: A throat examination is advisable before choosing medication. Simple supportive measures are usually sufficient for minor ulcers, but treatment depends on the underlying cause. Wishing you a healthy pregnancy and speedy recovery!