Hello, You are describing signs of an infection that is spreading. This will not resolve by itself. Anti-inflammatory medications such as Tylenol may help control the spread of the infection but is not a cure to stop the infection. An antihistamine, Benadryl, can help reduce inflammation as well. Warm saltwater rinses may help. Continue to clean the area as best you can. I strongly suggest you see a dentist to evaluate the area. It is most likely an abscess from the tooth, but can also be a periodontal condition. The dentist may be able to drain the area or clean under the gum. Antibiotics may be necessary and you will need to decide along with your physician how to proceed while pregnant. You should have regular prenatal visits with your physician. Visit a hospital emergency room if necessary. Amoxicillin is the typical prescription antibiotic use for dental infections. Thank you for your inquiry. Please schedule an appointment soon. I am glad to answer additional questions and hope this information is helpful to you.