Kick ni baby

Hello. May tanong lang po sana. I'm on my 18th week now sa pregnancy ko, then as per this app, nung 16th week probably first kick ni baby then last week I could feel her/his kick na raw. Then by this week, mas lalakas pa yung kick ni baby to the point na talagang mafe feel ko na raw to. Pero bakit diko ma feel? May mga nararamdaman lang akong sakit sa tagiliran ko minsan but its not my babys' kick. Is it okay lang po ba? When po ba talaga possible ma fe feel yung kick ni baby? I'm a first time mom. And I don't know bakit ganito. I'm worried baka napano na baby ko kasi di ko siya nararamdaman. Pero lumalaki naman siya. I'm worried lalo na di pa ko makapagpunta ng Hospital bcoz of lockdown. Please I need your answers and advice. Thank you so much.