I have foot has hurt where the part of a bunion would be on the pointy part of my big toe. Do you know what it could be, what to do?

Have it evaluated. Cause of pain may include tight shoes, sprain, bursitis, fracture, gout, contusion, neuritis, but of course there are a multitude of other possibilities. Thing that may help minimize your pain include: wearing shoes with a wider toe box, padding or strapping, oral nsaids. Get the feet inspected by a professional to determine the cause of the problem, as treatment varies depending on the diagnosis.
Bursitis. Possibly gout, are the two usual culprits there.