Hi.
Thanks for your query and an elucidate history.
To recapitulate; Female of 25 - have 2 problems - enlarged veins although not pregnant and secondly feeling of tight in the lower neck and upper chest.
All these symptoms at your age may be related to the
hormonal changes and psychosomatic changes that one gets and are commonly found in teh age group you are in.
I would advise you to keep away everything that is giving you the
stress and
anxiety.
Keep away all the instigating and enhancing factors.
Obviously you have to undergo few basic investigations
:
Upper GI Endoscopy
Pharyngoscopy and X-ray chest
Tests of blood, hormone studies, Gyne opinion if you have any problems.
If all these tests are normal , stop worrying, take the anxiolytics that will be given by your Doctors.
And you will be fine.