26 weeks after D&C still no AF!!

hi am new here but really looking for some advice please.

october of last year I had a d&c opp because of a missed miscarriage at 12w I was told procedure went well and had very little to no bleeding afterwords but since then I have had no period that’s now 26w since opp I had a slight brownish/old blood discharge on a few occasions but very little. I would have been due in 2 weeks and I can’t get my head round it all A’s still no further forward I’ve had blood test done and all came back fine and am currently waiting on referall for obs and gyne.

thanks In advance xx