I went to the dentist yesterday with severe toothache, i have an abscess and have been given antibiotics , i am allergic to penicillin so have been given others. I am much better nowadays at taking medication but I am feeling very sick ( i have had two so far) could this be a side effect, i absolutely cannot read the leaflet that comes with the tablets or I will scare myself into stopping taking them. I'm struggling to eat because of the abscess and wonder if this is causing the nausea. Thank you for reading.