[I LIKE CHOCOLATE MILK!!!]

I'm working on a sonnet for my English class and I need to know if the following verse is in iambic pentameter:

"Oh God," my soul cries out in anguished pain,
"I can not bear the burden of this test.
I need your Spirit to send the healing rain,
For only in your arms do I find rest."

I'm treating the word "Spirit" as one syllable; is that okay? I seperated it up like this:

"Oh God,"/ my soul/ cries out/ in ang/uished pain,
"I can/ not bear/ the bur/den of/ this test.
I need/ your Spirit/ to send/ the heal/ing rain,
For on/ly in/ your arms/ do I/ find rest."

Thanks for all your help!