My five year old had T&A on Friday last, he didn't eat much before surgery and of course after he didn't want food either but he started eating better on Sunday however for the last few nights he's been complaining about a tummy ache, it's severe enough that it's waking him up from sleep at night, it seems to be worse at night time, he'll get up crying and fussing and I'll rub his tummy with peppermint oil and coconut oil mixed together, he started fussing again a short while ago when I gave him his dinner and I asked him to show me where the pain was and he pointed to his navel, I touched to the side of his tummy and asked if it hurt there he said no and pointed to his navel again, I'm worried, what should I do? Does anyone have any experience with this kind of thing with their little one? The pain seems to bother him when he's eating too.