Do you think my filler could cause strep and react to amoxicillin badly. Will steroids help for both?

I had Restylane injected to my lips 12 days ago. Within 3 days I got strep throat, I took amoxicillin for 6 days (didn't fill out the 10 days) however the last 3 days my lips have been completely swollen and hurt worse than the day after injecting. I went into the dr that administered and they prescribed a steroid to take. Do you think the strep was caused from the filler? I got it within 3 days of injecting, and no one around me has strep or got it from me. Have you had any experience with this