Is adhd embarrassing to tell Pakistani bf

I’m an 18yrs old F and have been struggling a lot the past few years with undiagnosed adhd it’s affects my life a lot from doing simple tasks to focusing on assignments and it’s something I am really struggling to come to terms that I may have.
I have been talking to a guy for a year now and when it comes to things like focusing on doing my work and it taking me hours to even write a simple paragraph it is obviously really confusing for him because he just sees it as laziness and me getting distracted. But it’s not that i genuinely struggle I think it’s gotten to the point where I feel as thought I have to tell him for him to understand but I find it embarrassing and shameful.
Especially as Pakistanis I feel as though there is less understanding for these things in our communities and to brown boys they might just pass it off as wth Im disabled when I don’t see it like that as im a normal functioning person and no one would know unless I told them.
I have never told anyone that I may have it not even my best friend only my family and my teachers know and I am on the waiting list to get diagnosed I was meant to be at 16 but now I’ve reached 18 they put me onto the adult waiting list and I have to wait another two years.
I feel really ashamed if I say it because im scared of how he will react and what he will think of me. What if he automatically then subconsciously labels me as something else and what if it scares him off.
I really need help because I just feel like I need to tell him today I tried passing it off to him that I just have concentration issues but he obvs keeps asking more and knows im hiding something. He was asking me am i embarrassed of whatever it is and I had to lie and said no and that I would tell him today but I am.
I need help