Sexual acts in front of two year old?

My baby daddy and me ain't together and our daughter is two and a half. When we went to a drop off, we were in my car and I came onto him and sucked his dick and he fingered me while our daughter was in the car seat playing on my phone. Then another time, he spent the night and we had sex in the bed with her asleep and she woke up a few times. Is it bad to do sexual stuff in front of her? She's been humping things lately but idk if it's cause of us or just because it feels good or what.