It is generally not considered serious if you accidentally consume a small amount of undercooked meat, especially if it's just a few bites. The likelihood of any adverse effects from a small amount of pink meat is minimal. However, it is important to avoid regularly consuming raw or undercooked foods during pregnancy to minimize any potential risks. If you experience any unusual symptoms or are concerned, it is advisable to consult with your healthcare provider. Additionally, you can refer to reputable sources for information on food safety during pregnancy to ease any worries.