Difficulty orgasming / no sex drive

I am 23 years old, I’ve been with my boyfriend for 3 years. Prior to him I’ve had multiple partners (so I know it’s not him) I’ve never had an orgasm and I have little to no sex drive.

I have all my hormones and thyroid checked, everything came back normal.

My OBGYN says everything is fine and she isn’t sure what’s going on. And that I should see a sex therapist. I can not afford that so I’m asking for help. I’ve tried masturbating and it did nothing.

I bought some vitamins that i read up on. What are some things you take or do to help. Thanks in advance !