I Received A Prescription For Levoflaxcin To Day For A

I received a prescription for levoflaxcin to day for a UTI. I also was given Gabapentin for nerve pain from a herniated disc in my neck. I accidentally took three levoflaxcin thinking it was the gapapentin. I was ordered to take one daily for three days. I consumed the medication at 5:30 this afternoon and was about to take the next doe of gabapentin when I realized I what I have done. should I do anything?