I am 18+4 and have been having on and off achy feeling in my low abdomen and sometimes in my pelvis. It can last a few hours at a time and doesn't seem to have any particular cause. I wouldn't say it is cramps and it's not really painful but it's still making me worry (just like everything!). I lost pretty much all my pregnancy symptoms around 12 weeks but my bump has been growing. For the last 10 days or so I've been feeling some movement, though it isn't consistent and some days I feel almost nothing which obviously also makes me worry even though I know it is normal.
Just really wanted to get that all out and see if anyone else has or had the achy feeling.