trying to conceive babygirl :)

Hello, I'm a new member my name is Kayla. I have a 3 year old son and DH & I are trying to conceive a girl. We have been taking cranberry & acidphilous supplements. I also been douching vinegar & water before we have bd. Can someone please tell me how much I should douche so I don't kill the sperm? My Ph is at 4.5 before it wad at 5.5 so I'm guessing I can either conceive a boy or girl. What other ways can I sway for a girl? I don't O anymore. I been using ovulation strips . The O calendar says I'm supposed to ovulate on the 11th so should I quit bd on the 9th or when? Thank you for whoever replies & please do!!!!!!!

I wish I could be of help. If this works I would love for you too let me know so I can try it! :)