Was treated for strep throat 2 weeks ago but my throat still looks like this. should i be concerned?

That's long enough: Depending on how bad the infection and inflammation in one's throat is, 1-2 weeks may be needed to heal back to normal after treating strep throat. Strep throat is not resistant to penicillin or amoxicillin, so that treatment almost always works. For a few patients, bacteria remain and symptoms return (a throat swab strep test can confirm it), and they may need another course of antibiotics.