Hello,
First of all, Congratulations for your pregnancy.
Now if u want to try meditation and yoga, u can very well, but if the symptoms increase, it can be harmful for you and your baby's health.
Your symptoms suggest a kind of anxiety disorder which may need medicines or therapy.
Next Steps
consult a psychiatrist as soon as possible.
Health Tips
you need not be scared of the medicines as they can do wonders and heal you completely and which will be safe for your baby too.