I am 15 weeks & 1day ;Feelings

Sometimes I feel like I am going to lose my baby or I don't have a baby inside me because sometimes I don't feel her/him kick as hard (Am I too early ?)  , am I over thinking it ? Do you sometimes feel that way ? (I haven't had any bleeding or nothing everything has been fine & the baby heart beat was 161) should I talk to her/him a Lil more? (It's kind of weird talking in front of my mom)