Both of these drugs can cause nausea, vomiting
and stomach cramps
You can get thyroid
profile and see if there is over dosage of drug.Its dosage should be adjusted.
Or you can also get your urine microscopic examination to rule out urinary tract infection
Candidal recurrence is due to contraceptives you are using.
It can spread to your partner if you are not using barrier method.
Its better you use condoms or try to avoid sexual intercourse till you are completely cured.