Unless you were throwing up multiple times a day, or constantly eating acidic foods (fruits, juices, soft drinks) that dissolved your tooth enamel, it is not likely that your pregnancy caused your tooth sensitivity.

Tooth sensitivity is a very common problem. It can develop from brushing too hard. It also can be caused by a loss of supporting bone or gum tissue, which exposes the tooth root. It also can be a sign of tooth decay.

There are desensitizing toothpastes that can reduce sensitivity and harden the tooth. There also are fluoride rinses that you can use at home. At your dentist's office, he or she can apply materials directly to the sensitive areas to reduce the pain. A full dental exam may help diagnose the cause of your sensitivity.