Hello, I would be happy to help you with your question.
Based on the labs that you have described, the main issue is your
thyroid disease. The
ESR is not specific for any problems, and a white count of 13k during
pregnancy is normal. A
TSH of 15 is definitely abnormal, but so is 8 by most lab cutoffs.
1. The ESR is not specific for
miscarriage - it is not used in the evaluation or management of pregnancy and I am not sure why they are checking this lab.
2. Yes, travel during pregnancy is assumed to be safe in most cases. If your doctor said "no", then you need to ask why they feel this way.
3. Travel, in general, including air travel is not associated with causing miscarriages
I hope that this helps and good luck!