Should I talk to my therapist?

I have been going to therapy for a year and haven't mentioned my sexual orientation.. I think she's taken a hint, cause she hints every now and again that she's accepting and loving of homosexuality.
I've never told her about my feelings for girls or the one lesbian relationship I had, even when we talked about relationships a few times. I'm very nervous to even tell her, even though I know she's accepting and would care and be supportive, but I've been consumed with nerves/worrie the last 2 months more than ever because I feel like I'm hiding so much from my family. I tell myself that it's only 4 months until I'm away to university, but I have a thing with a girl here and I'm super scared they'll find out or reallize how giddy I get. I just need some advice and ideas to settle this anxiety but don't know how or if I should talk to my therapist about it... advice? :tears::bang::icon_sad:

Louisa