Baby hasn't pooped in 4 days

Eszter

My boy will be 6 months old in 2 days. He is ebf and eating fruit and veggie purée 2 times a day (we started introducing solids at 4,5 months). Usually he poops once or twice a day but he is on day 4 of not pooping. He doesn't seem uncomfortable, he is eating fine and passing gas easily. We tried every home remedy! Should I take him to the doctor?