There's a fine line IMO regarding Segulahs and Kamayas and Avodah Zarah. Unfortunately I know way too many people who put way too much importance in the 'power' of the Segulah and Kamaya yet they're so desperate for whatever they're wishing/praying for, they refuse to see it.
When I was pregnant with NS and we discovered he was breech at 32 weeks, I cannot tell you how many times I was told about 'the Segulah' about checking all my Seforim and making sure they were all 'right side up'. I was told a dozen times about a particular well somewhere outside of Jerusalem where, if my husband were to draw the waters and give me a cup to drink, that would turn the baby...
I checked the Seforim and made sure they were all facing the same way. I didn't drink any well water. I ended up with a c-section because he never turned.
So now I'm 38 weeks pregnant and I feel like I'm a million weeks pregnant :)
And there's a Segulah for a woman in her ninth month to go to the Mikvah and she should be Zocheh to have an easy, safe labor and delivery.
And then there's another Segulah for a woman who wants to conceive (or is having problems conceiving) to dunk right after a woman in her 9th month has immersed.
So I'm thinking of going on Sunday to the local Mikvah (which is just down the street)...
It's not that I believe or disbelieve in Segulahs (Kamayas are a different story). I just feel.. it can't hurt, right?