Last night I finished my seven day antibiotic metronidazole and now that I woke up it feels hard for me to swallow and my throat feels swollen(no pain.) and it feels like a build up of mucas that cant come up or go down when i swallow..throughout the whole treatment my tongue has felt raw like Ive ate a million bags of salt and vinegar chips..anyone else experience this?im 15w5d pregnant.