I'm 20+0 today and I have been feeling the baby move every day, usually when I get into bed at night.
Although, he is right down into my pelvis at the moment, so when he kicks you can feel it from the outside already, and it feels a bit uncomfortable because of where he is.
If your baby is higher up, there is loads more room to move in without making contact with you, so you probably won't feel much.
I wouldn't worry, everyone is different, some people don't even feel anything at all until 23-24 weeks, especially if your placenta is between the baby and your stomach wall.
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