You have taken antibiotic..for throat infection without any
vitamin cover I guess...no idea whether it is self medication on under supervision and prescribed by a doctor.
The ulcers in mouth and rashes in vagina may be due to fungal infection.
Next Steps
at this moment online consultation is a possibility with further discussion.
Health Tips
whenever take antibiotic take multivitamin along with it. Not to take any self medication esp.with antibiotics in any infective condition