Dull pain 3 weeks after Juvederm, what should I do?

I had 1.5ml of Juvederm in my tear trough and top of cheeks 3 weeks ago. I had some swelling and pain in the first week, which went away. For about a week it was fine, but for the last few days I've been experiencing a dull ache which comes and goes at the top of my cheeks. There's no swelling that I can see, it's not red or hot, there's no particular pain when I touch the area. I'm no longer in the same country where I was injected, so going back to see the doctor isn't possible. Please help me