Hi

I had 6 cavities in my teeth, 4 being really big. I had them filled with white fillings recently. They never stopped hurting though, it did get better on moments. Now theywere fixed about 2-3 months ago. The dentist did warn me that some of them the fillings reached the pulp or nerve and a root canal could be possibly necessary, be it within 2 weeks or 10 years....
Since yeseterday 1 tooth is a lot worse, 1 with a huge filling. The weird thing is that on 1 side this tooth is slightly coloring grey under the filling. Could it be that still some cavity was left and is spreading inside the tooth? If the nerve was dying, I would expect the whole tooth to turn grey and not 1 side?

I hope that anyone has an idea on this.... My problem is that I'll go travelling soon and I'm nut from the USA, no insurance but luckily I went to a dentist school which made it a little bit less crazy expensive.
I don't know what to do now... give it more tie and live on painkillers? I don't even know if I would have time to get a whole rootcanal/crown treatment before I leave...

Sigh... Thanks for reading this message
Teethproblems are really terrible, takes over your whole mind
goodluck to all!