I've used Ortho-tri-cyclin low, Yazmin, the nuva ring, the patch, and depo.
I think the Ortho-tri-cyclin low was the best. I didn't notice any mood changes, and it didn't make me feel any different.
Possible Side effects:: http://www.rxlist.com/cgi/generic/tricyclenlo_ad.htm
Yazmin made me quite moody and it also caused nausea.
Possible Side effects:: http://www.rxlist.com/cgi/generic/yasmin_ad.htm
The nuva ring disgusted me, you have one ring, and you keep it "in there" all month, you insert it and remove it yourself.
Possible Side effects:: http://www.rxlist.com/cgi/generic/nuvaring_ad.htm
I also had problems with the patch. It can cause blood clots. It reminded me of a bandaid. You put it on for a week, and lint sticks to it and it looks dirty. It would also come off or stick to my jeans.
Possible Side effects:: http://www.rxlist.com/cgi/generic/orthoevra_ad.htm
The depo shot has many side effects. It can also cause increased appitite, which in turn makes you gain weight. After prolonged use it causes bone marrow loss. Possible Side effects:: http://www.rxlist.com/cgi/generic/depoprovera_ad.htm
Condoms are also an option. They can break, and they are inconveinent. But they have no side effects.
I've heard horror stories about the IUD, but I've never tried it.
There are also::
Spermicides
Contraceptive Sponge
Diaphragm
The Rhythm Method
Just to name a few.
Talk to your doctor about it, and have him/her go over the pros and cons of multiple birth control methods. If you're still breast feeding, it's not recomended to use oral contraceptives. You and your doctor should decide what is best for you.