Sharp pain if I don't sit up straight

Kelsie

Alright sooo idk if anyone can help me, but I'm eight weeks pregnant. And sometimes if I bend over I get a very sharp pain on my right side right below my rib. And it only goes away if I stand up completely straight up. And the pain just slowly goes away. But it happens without fail.. any idea what it could be? Obviously not the baby where it's only the size of a lady bug if that.. but help 😩