If you are using Always brand disposable pads you might want to check out this article. Actually this is the shortened version but gives you the main points.
Contact dermatitis associated with the use of Always sanitary napkins
E. L. Eason and P. Feldman
Department of Obstetrics and Gynecology, Montreal General Hospital, Que.
OBJECTIVE: To report a clinical association between vulvar irritation or contact dermatitis and the use of Always sanitary napkins.
DESIGN: Case series.
SETTING: A gynecology practice in Montreal.
PATIENTS: Women presenting between September 1991 and September 1994 with itching or burning of areas that would be in contact with a sanitary napkin (mons pubis, external surfaces of the vulva and perineum) beginning at least 1 day after the use of the napkins was started and less than 5 days after the use was stopped.
RESULTS: Twenty-eight women experienced vulvar itching and burning, often associated with eruptions resembling contact dermatitis, of the vulvar and perineal surfaces after using Always sanitary napkins. Twenty-six reported that symptoms disappeared after they stopped using that brand of sanitary napkin. Seven women who later used the same brand again reported a recurrence of the vulvar irritation.
CONCLUSION: The findings of this case series reveal Always sanitary napkins as a potentially important cause of recurrent vulvitis. Physician awareness of the association will enable effective advice and relief for a large number of women suffering "chronic vaginitis".
Contact dermatitis associated with the use of Always sanitary napkins
E. L. Eason and P. Feldman
Department of Obstetrics and Gynecology, Montreal General Hospital, Que.
OBJECTIVE: To report a clinical association between vulvar irritation or contact dermatitis and the use of Always sanitary napkins.
DESIGN: Case series.
SETTING: A gynecology practice in Montreal.
PATIENTS: Women presenting between September 1991 and September 1994 with itching or burning of areas that would be in contact with a sanitary napkin (mons pubis, external surfaces of the vulva and perineum) beginning at least 1 day after the use of the napkins was started and less than 5 days after the use was stopped.
RESULTS: Twenty-eight women experienced vulvar itching and burning, often associated with eruptions resembling contact dermatitis, of the vulvar and perineal surfaces after using Always sanitary napkins. Twenty-six reported that symptoms disappeared after they stopped using that brand of sanitary napkin. Seven women who later used the same brand again reported a recurrence of the vulvar irritation.
CONCLUSION: The findings of this case series reveal Always sanitary napkins as a potentially important cause of recurrent vulvitis. Physician awareness of the association will enable effective advice and relief for a large number of women suffering "chronic vaginitis".
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: When I was growing up, my mom quit buying always because I had a HORRID yeast infection and super swollen female parts EVERY MONTH that wouldn't go away until my period quit. (Because, of course, I didn't have a pad on then.) She finally figured it out (remember, I was only 14 at the time--I wasn't mature enough to have a clue 
)and started buying a different brand. No other brand ever gave me that problem, though. After my first 2 kids were born in the hospital I got a REEEEEEEALLLLY bad postpartum infection BEFORE I EVEN WENT HOME because, duh, they only had Always in the hospital. I tried telling them I had brought my own pads (after ds#2 was born) but "according to hospital policy, had to use what they provided". 
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