A hard stomach during pregnancy is usually a contraction phenomenon, which can be categorized into false contractions and true contractions.
Pregnant women who keep a position for a long time, frequent activities, mental anxiety, etc. may lead to the phenomenon of false contractions, manifested as a hard, tight feeling in the stomach. If this happens, the pregnant woman should stop immediately to rest, relax and pay close attention to the changes of contractions, which are usually shorter in duration and not accompanied by other symptoms.
If the contractions become gradually regular, more and more frequent and accompanied by abdominal pain, vaginal bleeding, etc., it is considered to be a true contraction, may be the first sign of preterm labor, preterm labor, etc., it is recommended to sit down or lie down and rest, and seek medical attention in a timely manner.