transgender ocd?

hi im afab and recently ive been experiencing what can only be described as intrusive thoughts about me being trans. these thoughts consume my mind much of my time. i am continuously checking and second guessing that i "feel female". before this i had absoloutely zero sign or desire of wanting to be a gender other than female. ive wanted a more feminine curvy figure, for as long as i can remember ive wanted larger breasts, sometimes when i get my period it makes me feel good bc i feel more connected to femininity and womanhood. lately i keep second guessing myself when i think those things and that im "lying to myself". these thoughts fill me with so much anxiety. the anxiety isn't due to living as a girl though, the anxiety is caused by the thought that i may be a gender OTHER than female. i also have a history of many anxiety disorders so im not sure if this is just a symptom of that but lol please help im strugglin.