Lab results can sometimes be in error, either because the quality control run with each batch of samples is off, or for other technical reasons. You can ask your doctor's office to call the lab before they toss the blood sample, and ask for a retest on the same sample at no charge. This might be a smart idea, especially since you've been laying goose eggs on every previous test. And, too, it may lower your anxiety index for the next three months.
All the best to you. Take care and hang in there.
P.S. I'm not online much because I'm working full-time and helping to care for my nonagenerean and octagenerian parents, but I think about you guys on this forum often.