Don't look for 'tattoo designs'. Instead find any images or objects that appeal to you, that are meaningful and pretty to you, and take them as references to your tattoo artist of choice to interpret into a tattoo design.
Pictures, photos, drawings, paintings, sculpture, jewelry, designs on fabric, something from nature, something from antiques or family heirlooms, etc.
Here's a great article that may help:
http://galadarling.com/article/how-to-get-a-great-tattoo-and-never-regret-it
you could do a drawing of a pretty mandala:
here's a 'how to':
http://www.art-is-fun.com/how-to-draw-a-mandala.html
here's examples of mandala's (your tattoo artist would need to reinterpret to make ideas 'tattoo friendly':
http://www.google.com/images?um=1&hl=en&tbs=isch%3A1&sa=1&q=mandalas&aq=f&aqi=g10&aql=&oq=&gs_rfai=
possibly an interpretation of the feminine symbol - the spiral goddess, the other has the tree with the 3 phases of the moon:
http://ocean1025.files.wordpress.com/2007/06/spiral-goddess.jpg
here's another feminine goddess image:
http://goddessontheloose.com/wp-content/uploads/2008/08/goddess-crop-circle.jpg
maybe the winged goddess, Isis:
http://api.ning.com/files/HWh5LC3d0fZ5yt7QWsGnBr5M53qOf16QmzVM-L2LbJkhTIWtZrUztv6aZBjqEzJW9ojyLfMmRvFBBS*9EQ4d6FSHmb*ptZ9z/isisdrawing2.jpg
http://users.ucom.net/~vegan/images/isis.jpg
this one is from the Temple of Abydos, Egypt. Dynasty XIX, 1371 B.C.
http://www.rainbowcrystal.com/egypt/E-87isis.jpg
this is an old Celtic symbol of womanhood - the triple spiral = maiden, woman, crone:
http://www.listphile.com/Celtic_Symbol_Database/Triple_Spiral/image/celtic_triplesymbol.jpg
the moon is thought to be a symbol of femininity:
http://www.tattootribes.com/multimedia/88/maori-moon.jpg
and of course, you can not go wrong with a flower...
luck~