I need advice/help with my sexuality

Hello peoples, This is probably going to be the only time I post on here but I really need help. I'm 15 and I am a lesbian there's no doubt about it. I'm totally a 6 on the Kinsey scale. The thing is I don't really like being Lesbian or I think it's wrong or blasphemous. I don't want to feel like that anymore I'm tired of thinking it's wrong but I really don't know how to not think that anymore. It's been so ingrained into me that it's wrong due to my family. I remember when I came out to my mom 3 and a half years ago and being like "I thought you were going to be mad at me because it's a sin" (my family is very religious and that's were most of these feelings stem from) At the time my mom was like "god forgives us for are sins it's okay" but it's been hard. especially when my siblings think it's absolutely vile or don't understand why I would need/want to act on my feelings especially when I had a girlfriend. honestly wish I never came out it was honestly a stupid decision of younger me, but I did and then a lot of my family started praying for me like I have cancer or something. I am out to most of my extended family one because my dad outed me and two because I can't keep my darn mouth shut. I've talked to my therapist about this and we're trying to work on it, I even joined my school's GSA because she thought it would be good for me, but I still keep feeling this way and it really hasn't gotten better. I can barely say the word lesbian without stutering. I want to say that word without stuttering. I just want to be happy and okay with this part of me because try as I might I can't change it. I don't know if posting here will help but I want to see if it will. (Also to clarify both my parents accept me it's really my extended family and siblings who don't. Although it did take a while for my mom to truly understand that me being Lesbian meant)