Stretching pains

Charlotte
Anyone else having stretching pains that are more painful some days than others? I'm 6w5d and they've been like mild period pains, but today was the first day they've actually hurt enough for me to stop what I was doing and rest. 
Sorry for the tmi here but I'm also kinda constipated if that adds to them being more painful at all? No bleeding or spotting at all.