Went to the docs this arvo to check my possible prolapse and the heaviness checked out! So the results were that I'm paranoid about nothing and there wasn't a prolapse when she was examining me, which I guess is good news!
She used the Doppler as I'm a little concerned as my last scan was at 12 w next one will be at 24w so it's a long time in between! Hb was 145pm so very normal for 16w. All round good results and I can stop stressing!