It is completely normal for your belly to still be small at 18 weeks pregnant. Every woman's body is different, and the size of your belly can vary depending on factors such as your height, weight, and the position of the baby. As long as you are receiving regular prenatal care and your healthcare provider has not expressed any concerns about the growth of your baby, there is no need to worry.
As for feeling the baby's movements, it can vary from woman to woman. Some women may start feeling flutters or gentle movements around 18-20 weeks, while others may not feel anything until later in their pregnancy. These early movements are often described as butterflies or gas bubbles. As the pregnancy progresses, the movements will become more pronounced and noticeable.
If you have any concerns about your pregnancy or if you notice a significant decrease in fetal movement, it is important to contact your healthcare provider right away. They can provide reassurance and guidance based on your specific situation.
Remember that every pregnancy is unique, and what matters most is that you are receiving proper prenatal care and monitoring the health of both yourself and your baby throughout this exciting journey.