Curious

Tomorrow I will be in my third trimester. Monday - Wednesday my son was on the right side and I could feel his kicks from the outside he was being more active than usual. Usually he is not active at all. Anyway the past two days he's been very lightly kicking in other places. The amount of kicks were normal for last week but I'm just confused why would his kicks get softer and be on a different side. I'll be 28 weeks tomorrow and I have a doctors appt Tuesday so ill definetly be talking to him. Just curious if anyone else's baby's movements were like this.