Does having perfect blood tests mean you're in perfect health?

I recently got all my bloods done, they all came perfect according to my doctor.
A full blood count.
My question is, ‘does this mean my body is in perfect health?’
I keep having annoying heart burn and erratic bowels.
I’m thinking ulcer or something, however she has passed a clean bill of health.
Could there be something else wrong that the blood tests just didn’t pick up that might explain my terrible tummy.
ps : Just in case you didn’t pick up, I suffer(ed) from anxiety.
I’m trying to give up.