 [ Symptoms ] can taking biotin cause yeast infections  i have been taking biotin 5000mg once a day for the last 3 weeks since i have been taking it i have noticed 2 things my urine smells extremely bad and i have been experiencing symptoms close to yeast infections burning when urinating i notice it happens after i take the pill in the morning would it help to take it at night   i am taking it as a routine vitamin for hair and nails not medically necessary [ Disease ] hi i think if your this worried best see your doctor or obstetrician and get some tests done but as you as your body clock is not back on time yet and i think you mean periods if these are all over the place see your doctor about getting some bc pills as these should regulate your periods this should settle you down say 6 to 9 months then would be the time to re think about trying to get pregnant again after your miscarriage did you have d and c see what you think good luck