How to recongnize transition from Bloat to Showing?

happy_un-bride

I have been suffering with bloating duirng my entire pregnancy, Some mornings I wake up with minimal bloating, but still not as small as I remember being.  At what point will I be showing a small amount?  I'm not assuming its not bloat or additional weight gain, but curious when showing starts, since I think my uterus should soon be above my pelvis.