SPD question

Mel • I have three beautiful boys... Justin 8 Reggie 2 Rudy 1 And now trying for number 4! Hopefully a pink one haha xx

Has anyone had it before? Can you please describe it for me, how was it for you? I'm constantly in pain this time round. Never had it before in previous pregnancy's. She's sooooo low down too which I don't think helps. 23+5 and it's just getting worse xxx