Im 14 weeks pregnant with my second and my stomach has been feeling so strange and hurts alot at time like its really tight.. this never happend with my first but me and my partner had sex today and i had to stop because its like i could feel the baby through my tummy like where he or she is sitting and it felt very uncomfortable and started to hurt.. then afterwards when i went for a shower my stomach looked small again .. is this normal? Its very hard to explain the feeling