SPD in Week 8, too early?

Symphysis Pubis Dysfunction (SPD) I am 8 weeks into my 2nd preg. 1st preg (DD born Jan 2017), I started having terrible backache and difficulty walking/moving about 20 weeks into pregnancy. Back then, went to KKH Urgent O&G and was informed early onset of SPD, rare but possible. This time, I started feeling pubic and pelvic pains as early as 7 weeks! Had really bad cramping too, went to KKH Urgent O&G and was informed preg was ok. Ruled out possible ectopic preg. Informed the dr I am experiencing SPD symptoms and she laughed it off saying it is really too early for that! Didn't quite like the dr's reaction, and even pointed out my history (ie: SPD week 20). Any other mummies experiencing something similar?