At 23 weeks of pregnancy, it is common to have a big belly but not feel intense movements yet. Every pregnancy is different, and the strength of fetal movements can vary. However, if you are concerned about the reduced movement or have any other worries regarding your pregnancy, it's always best to consult your doctor for reassurance.
As for the increased veins on your chest, boobs, belly, legs, and arms - this is also a common occurrence during pregnancy. The hormonal changes in your body cause an increase in blood volume which can lead to visible veins. This is generally considered normal unless accompanied by severe pain or discomfort.
However, if you notice any sudden changes or experience any unusual symptoms along with the vein appearance such as swelling or redness around the veins or pain in your legs or arms, it is important to inform your healthcare provider as these could be signs of a more serious condition like deep vein thrombosis (DVT).
Remember that every woman's pregnancy journey is unique and it's natural to have concerns along the way. Regular check-ups with your doctor will help ensure everything is progressing well.