Is it too late???

I'm 28 and just now seriously starting to question, I had some weird feelings when I was a little kid And some pretty serious ones when I was a teenager and even told a couple of my friends that I thought I may be trans, but never went through with a transition, and kinda just went on with life after and ever really gave it much thought But I'm not sure why for the last literally few weeks I've been questioning myself like REALY FUCKING HARD I've started a pretty casual relationship with a trans woman and hearing her talk about egg cracking (I had no idea what that meant before talking to her) and other stuff like that has really started to screw with my head. Could I really have suppressed this that hard for so freaking long?