I started the nuvaring back in Nov 2005, Dec 2005 I found out i ...

I started the nuvaring back in Nov 2005, Dec 2005 I found out i was pregnant. Since then I delivered that baby in aug '06, tried to get pregnant again but it took 6mo of trying but finally worked, delivered baby number 2 in jan of '08, and then had an IUD inserted but within 5mo of that was pregnant again!! I delivered my 3rd daughter just 2mo ago on June 6th '09 Now I have 3 babies under 3 and my doctor is completely at a loss for what might work for me. So we decided that I would go back on the IUD and also use the NUVARING as a backup since the IUD was non hormonal. I started the NuvaRing and I am due to get my IUD inserted this fri, but tonight i finally said enough is enough and took out the NuvaRing. I put it in on the 22nd of July but will not be going back for month number 2. I am so short tempered with my 2 older daughters all of the sudden, I was steadily losing weight and now im at a standstill, my husband and i were having sex once a day and now i barely want it once a week, and i was having severe pain in my right calf, and headaches that were unbearable, and most importantly and most obvious is severe severe depression. I am constantly questioning my self worth and whether or not my husband loves me and if im a bad mom and so on and so on... Im really scared now because i am so afraid the IUD wont work again and I honestly don't think i could handle yet another pregnancy. Being pregnant every other 9mo for 3 yrs has taken a major toll on my body and emotional level alone, i don't need my birth control to do it too... So i guess my question is, are there any other forms of BC like The IUD that are non hormonal and could possibly be taken along with the IUD? I just don't trust only one since 2 of my pregnancies were conceived while on bc... any advice would be greatly appreciated!!