I'm not old enough to give suggestions on this but here's what I think......
u should tell ur boyfriend abt what your dealing with n I know u must be scared to do this with the fear of losing him Cuz u love him.
But just think some or the other day he should know this. Sooner the better.
And do seek help if you don't have one yet . It might help.
n I'm pretty sure u must be a wonderful person , don't lessen yourself
Oh by the way congratulations