Agreed with Weatherwax, fertility magick and rituals have been around for centuries. Although not a finite to your quandary, you may be able to to enhance your blessings/ graces/ chances through rites and fertility spells.
Some sites & blogs with spells/rites/rituals other than SOM with fertility and contraception guidance:
Also, if you are to do any fertility spell casting or become pregnant/expecting avoid
the oils & herbs below: