How long should an earache last?
Most ear infections resolve on their own after a week or two. Symptoms may start to get better after a few days. If your pain is caused by another factor, it might take a bit longer for it to resolve.
Conclusion
There is not much evidence on alternative treatment for earaches. However, studies have shown that various home remedies can help reduce the pain. The effectiveness of the home remedies depend on the cause. You can contact your doctor if your pain persists after using any of the home remedies or if it worsens.
References
[1] https://www.webmd.com/drugs/2/drug-1082-1727/aspirin-oral/aspirin-extended-release-capsule-oral/details
[2] https://www.mayoclinic.org/diseases-conditions/ear-infections/symptoms-causes/syc-20351616
[3] https://medlineplus.gov/antibiotics.html
[4] https://www.healthdirect.gov.au/anti-inflammatory-medicines
[5] https://www.medicalnewstoday.com/articles/172943
[6] https://www.webmd.com/drugs/2/drug-76035/hydrogen-peroxide/details