Baby movement

I’m a first time mum and im 18 weeks + 3 days i do have an anterior placenta but I started feeling baby at 16 + 2 and st fort I felt her every other day and lately every morning I feel her or every time I lay down I usually feel a few kicks but still super faint. I usually have felt her by now it’s 9am in Australia and I haven’t felt her yet I think I did maybe feel a tiny soemthing earlier but nothing like usual. Should i be worried? I know it’s still early but I just don’t know if I should be worried :(