Since your pain is one-sided, worse in the evenings, and triggered by speaking or laughing, it might be related to vocal strain, muscle tension, or acid reflux rather than an infection. Gargling with Betadine (povidone-iodine) is helpful for temporary relief of acute sore throats, but it is not an effective long-term treatment and won't address the root cause of your pain. I gently recommend resting your voice, staying well-hydrated, and consulting an ear, nose, and throat specialist.

Since you gargled and spit it out a day ago and feel completely fine, there is no need to worry. Betadine First Aid contains a higher concentration of povidone-iodine (usually 10%) compared to the Betadine Oral gargle (typically 1%), and may have inactive ingredients not meant for oral use. However, because you did not swallow it and have experienced no throat irritation, nausea, or stomach upset after 24 hours, your body has not absorbed any harmful amounts. Just drink plenty of water to flush out any remaining residue and use only oral-specific products in the future.

Your symptoms strongly suggest balanoposthitis, which is inflammation of the glans and foreskin. Since Betadine, ketoB, and Keto 4 haven't helped, the Betadine may actually be drying and cracking your skin further, and steroid-antifungal creams like ketoconazole with betamethasone should be used cautiously. I highly recommend pausing these and gently washing the area with only warm water. Please consult a urologist or dermatologist. They can perform a swab to identify the exact cause?whether fungal, bacterial, or irritant?and prescribe a targeted, safe treatment.

It is highly unlikely your symptoms are signs of "black fungus" (mucormycosis). This rare condition typically affects individuals with uncontrolled diabetes or those who received high-dose steroids, which are not among the medications you used (Zincovit, Crocin pain relief, Azithromycin, and Betadine gargle). Nasal congestion, headaches, and itchy eyes are very common during pregnancy due to normal hormonal changes, allergies, or sinus pressure. Since you are 31 weeks pregnant, it is always best to consult your obstetrician to safely manage these symptoms and ensure you and your baby remain healthy and comfortable.

You can keep antiseptic lozenges or anti-inflammatory tablets, such as ibuprofen, in your travel kit to help reduce throat pain and swelling. It is also advisable to carry paracetamol to manage any fever or discomfort. Antibiotics should only be used if prescribed by a doctor, and staying hydrated and using saltwater gargles can help ease symptoms while travelling.

While Betadine is a good antiseptic, it may not target the specific root cause of your sores, which could be viral, bacterial, or simply a skin irritation. Sometimes, antiseptic use on sensitive skin can even delay healing. I gently recommend stopping the Betadine and seeing a healthcare provider or visiting a clinic. They can easily swab the area to find the exact cause and prescribe the correct, targeted treatment to help you heal quickly and comfortably.