Really embarrassing but I’m bleeding..

This is a really embarrassing question but I need advice..

When I had my daughter I developed a hemorrhoid on my back bottom. It’s never bothered me pain wise until recently..

I’m 18 weeks and a few days pregnant with our baby boy and last week when I went to use the bathroom I was constipated. When I started to clean myself I noticed a lot of blood..

I went to my doctor and she dismissed it as just constipation and how it sometimes irritates the hemorrhoid.

Well yesterday I came home from work and used the bathroom, #2, and again lots of blood..

Then this morning I peed and again.. a toilet full of blood. Has anyone experienced this?? I feel like baby is still moving.. but I’m nervous now