my 4 month old has tiny sporadic bruises on his little legs 😢 I noticed them tonight. I'm so…

my 4 month old has tiny sporadic bruises on his little legs 😢 I noticed them tonight. I'm so worried. He is with me all day long and only my husband and I hold him. I don't leave him with anyone ever.....I am gonna call the doctor tomorrow because bruising in babies is NOT normal. Please pray for him if you could. And also, if you have any idea what it could be, I'd appreciate your input.