Toddler hitting my pregnant belly

So I’m about 15 weeks along and I have a 2 year old toddler who is very active. He’s hit my belly a bunch these past few weeks. Even though I’m 15 weeks along I am super super skinny and this is my second pregnancy so you can see where my uterus protrudes out from my belly. There’s not much cushion surrounding it.

Well the first hit was pretty hard with something in his hand and immediately after I could feel the baby hit back. Then he’s kicked my uterus multiple times pretty hard while changing his diaper. Then he also sat down really hard on my uterus while I was laying down and that really hurt. I could even feel the baby shift immediately. And just now he head butter my uterus so hard that I cried and my uterus is very inflamed and sore. None of these have resulted in a miscarriage, bleeding or contractions but I’m sitting here scared holding my sore uterus.

All of this has happened in the past two weeks and I’m honestly scared to spend time with my toddler and play with him. He doesn’t understand what he’s doing. But I know that the baby can feel it because of the movement I feel afterwards. So Is the baby going to be okay? Should I be worried? I’m scared because even if the baby was in distress there’s nothing I can do about it at this stage. Is it going to be fine?