I've had achy hip joints for a few months, but on Sunday I woke up with a really intense sharp pain in my left hip which spread down my leg as I walked and yesterday it spread across the front of my pelvic area when I got out of bed.(It's still sore now - although feeling a little better, I can feel it getting worse over the day) It gradually gets worse throughout the day until I couldn't even walk without DP taking most of my weight.
Lot's of different things aggravate it, walking, sitting up/ lying down, changing position, getting out of the car or turning around while sitting etc. I read a bit about SPD and have a few of the other symptoms as well ie, slight incontinence () in certain positions, lower back pain (have had this for a while but is worse now) and clicking every now and then when I move my legs.
I am a bit of a hypochondriac when it comes to self diagnosis which is why I'm asking.

Is it possible I've had this for a while without realising it? Thinking it was just regular pregnancy aches and pains.
Does this sound like SPD to you or something else?