Mamma mia, I have similar issues at 25 weeks.. I would see the same in the mirror... and definitely pain between my legs when walking. Thought it happened later on last pregnancy, but my dr wasn't concerned. This baby is lower, so probably why.
And by the end of my other pregnancy, my whole side of the bed was pillows! But not there yet this time. Hips not bothering me yet, phew. I use a prego pillow some... but don't have to use it and sometimes yeah it annoys me. I don't plan to need it when I travel this wknd. But I may make sure I have some extra pillows.