Hi I'm a first time mom, 18 weeks preggy I have a lil concern and question. If is it normal not to feel any movement of the baby inside the body?

I was a lil worried na din, but my tummy keeps on expanding naman like it was a normal pregnancy. I've been in a very bad condition sa first trimester and after that I didn't feel anything weird na except sa di ko ma feel yung baby inside my body.