Need help. Little one has brought up his last two FF. he hasn't pooped for nearly 3 days. I was at GP with him last week due to this and they wasn't massively concerned. Advised half oz prune juice with half oz boiled water morning and night till he went- we did that last week and he started going once a day. I've tried the prune juice today and nothing apart from full feeds being brought back up. Should I be worried tonight? Do I need to take him anywhere or contact anyone?