how long can I be pregancy after the C14 urea breath test

[kloallan]

Dear all,

I just take the so call C14 ubt / c14 PY test, and ingest a C14 capsule of 37 kpq to checkstomachache, as I know c14 is radiation. But after ask a lot doctor when can I be pregancy, there are different ideas, some say no need to wait, some say 1 month, some say 3 month, some say half year,​

some material said there are biological half life of 40 days, I am concern the effect of the C14:
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So why I so worry about that is because I am so anxious, I want to know when could this C14 run out of my body and when can I be pregnant?

Thanks very much.​