Ligament pains worse with more pregnancies you have?

So I'm pregnant with our third and I swear I have more ligament pain and stretching this time then I did with either of my other pregnancies. I wonder if this is because it's my third? Or because I got pregnant 9 months after having my second? Or because I have a 14 month old that wants to be held all the time that I just am using those muscles a lot more during this pregnancy than I had too before since our oldest was 4 when I was pregnant last I wasn't having to pick her up?