Firstly antibiotics are a prescription only medicine so you would need to see a doctor for them. But before you reach for the antibiotics think about alternative treatments. Antibiotics should only ever be used as a last resort as our bodies become immune to them and therefore they not only become less effective but new virus strains are created which current antibiotics cannot cure.
So a remedy for a sore throat. Mainly keep up your fluid intake preferably warm clear fluids. Hot vitamin c drinks with honey will also help. If you are in a cold climate keep your chest and neck area covered so warm, to prevent a further chill. Keep a drink by your bed at night and if your throat is dry just gently sip on water.
Hopefully whatever you have planned for the weekend will distract you from your sore throat.