I believe most typical pregnancy pains at this point should change with position. I would suggest calling your doctor.
21w1d same pain same place miserable all day. I don't think it's a problem
I dont think it stretching pains seeing i have those pains more in the middle of day and never when im laying down. just worried cause i have never had these pains before
I'm hopeful it's ligaments stretching to make room for baby. If the pain continues through the morning, call your doctor. If bleeding starts, call their offices 24hr emergency number. I hope the pain eases up in the next short while to ease your worries.