It is common for women to start feeling fetal movements between 18-25 weeks of pregnancy. However, every pregnancy is different, and it's possible to feel movements earlier or later than expected. The position of the placenta can also affect how noticeable the movements are. In your case, since the baby is lying low to your bladder, it may be cushioning the movements and making them less noticeable. Additionally, if you have a thicker abdominal wall or if you're carrying extra weight, it can make it harder to feel those early flutters. If you're concerned about the lack of movement, it's always best to consult your healthcare provider who can provide reassurance and perform any necessary tests or ultrasounds to ensure everything is progressing well.