A tiny sore in your mouth might not seem like a big deal until it starts to sting every time you eat, drink, or even breathe. Mouth ulcers are more common than we give them credit for. Usually, they’re nothing to worry about. But if they’re showing up a bit too often or staying longer than usual, it’s time to pay attention.Here’s a look at when to shrug it off, when to switch to soup, and when to book that appointment with your dentist or GP.Ulcers Happen But Not All Should Be IgnoredNormally, ulcers usually clear up within two weeks and are often linked to being run down or low on certain vitamins. But if that ulcer refuses to budge after three weeks, it’s not something to ignore. Cancer Research UK recommends seeing a doctor or dentist if an ulcer or a red or white patch is still hanging around after three weeks. It could be harmless, but it could also be your body waving a little red flag.DIY HealingMost mouth ulcers don’t need a lot to treat. The NHS says they’ll usually heal with time and a little TLC. That said, you can speed things up by not doing things that make them worse.Skip the spicy curries, salty snacks, acidic foods, and crunchy culprits like toast or crisps. Basically, if it hurts to eat it, you shouldn’t be eating it. Hot and acidic drinks like fruit juice are also a no-go. As for toothpaste, check the label, avoid ones with sodium lauryl sulphate, a foaming agent that can irritate ulcers.Instead, go soft and soothing. Stick to cool drinks, go for gentle foods, and switch to a soft-bristled toothbrush that won’t scratch or poke at sensitive areas. Regular dental check-ups and a balanced diet also go a long way in keeping your mouth happy.Not All Ulcers Are Created EqualMost of the time, ulcers are just that: temporary sores. But if you’re dealing with one that refuses to heal, is especially large or painful, or comes with other symptoms like swelling, difficulty eating, or a lump in the neck, don’t play the waiting game. It might be something more serious, like an infection or in rare cases, something that requires more thorough investigation.PreventionIf you’ve had your fair share of ulcers and want to avoid the next round, the answer lies in prevention. Aside from dodging the usual food triggers, it helps to manage stress, get enough sleep, and eat a diet rich in iron, folate, and B vitamins. Also, drink plenty of water and make sure your mouth stays clean.Regular dental visits help your dentist spot the early signs of anything unusual and give you personalised tips on how to avoid recurring ulcers.Don’t Panic, But Don’t IgnoreMouth ulcers are rarely serious. Still, it’s better to be safe than sorry. If your ulcer overstays, refuses to heal, or comes with other odd symptoms, get it checked. And while you wait it out, treat your mouth gently. Avoid fiery foods, switch to a soothing routine, and try not to poke at it with your tongue.