Hi Jezzy, do you mean immediately after your extraction? I had a lower second molar extracted a couple of years ago and ate soft food on the day of the extraction because my mouth was a bit sore. The next day I went out for dinner in the evening and had a normal meal, I just ate on the other side, and rinsed afterwards to make sure nothing was in the hole. I also avoided rice for a week or so because I had a fear it would get stuck in the extraction site, but that might have been me being silly.
If you usually eat a school lunch instead of bringing a packed lunch then I am sure you will be fine. Once the hole closes up you will be able to eat on the other teeth on that side.
By school lunch tomorrow you will most likely be fine to eat normally, just be guided by how your mouth feels when you choose what to eat. I had 14 teeth removed for orthodontic reasons in school (10 baby, four adult in two tranches) and was amazed how quickly everything healed up. My parents were shocked at how soon I was eating normally, although I definitely milked needing ice cream!
I had my 2nd lower molar extracted a few months ago. Like Judythecat says, you can eat normally on the other side rhe next day...just be cautious about trying to keep food off that side. Be careful with rinsing. The oral surgeon told me to just let water run over the area the first few days...not to vigorously rinse for a week
A dentist may want to chime in, but to me, it looks like mine did with my 2nd molar extraction. Mine was maybe a bit more grayish. It was normal and healed just fine. Pain increased on day 2 and 3 with me, as the swelling peaked, which my oral surgeon said was normal.
I had dry socket with my wisdom teeth removal. It is a pain you don't forget. You wouldn't classify it as a little throbbing. It was worse when I laid down. When I had dry socket, the extraction site looked white and deep, because the blood clot was gone.
With dry socket it usually hits on day 2 to 3, and is super painful, and painkillers don't really help.