Should i test for rainbow baby ?

Well I am on bc. In October I had a baby boy, our fourth boy, and after two hours he passed away. My dr told me to give my body a few months to heal as well as my heart as it was devastating...So three months later here I am on bc, but due to a crazy week and the pharmacy taking a few days to fill my already late subscription for birth control pills, I was off them for 6 days...My so and I BD a lot last week while I was off bc and now I'm wondering should I test to see if I got pregnant ? Is it even possible ?