The fever will not cause regression, as long as you give the child normal breastfeeding, use the breast pump to suck out the milk normally, it will not cause regression. But when you have a fever, you have to decide whether you want to continue breastfeeding your child according to the specific symptoms.1. If you have a common cold and fever or a sore throat, you can continue breastfeeding your child, and the mother’s body will produce antibodies to help the baby resist the cold and flu viruses, which is very good for the body, so don’t discontinue breastfeeding at this time.2. If you have a high fever or body aches, you are most likely infected with Influenza, influenza’s pathogenicity is very strong, the risk is also relatively large, this time or do not give the child breastfeeding. 3, if the breastfeeding mother fever accompanied by infectious diseases, also can not give the child breastfeeding.