Pressure in bum while pregnant

I’m only 15 weeks and 4 days. I started to feel pressure down there early in the pregnancy about 10 weeks possibly. It doesn’t really hurt and I do suffer from hemmorhoids but *knock on wood* I have been really good with not being constipated and this is my first pregnancy. But i can really only feel pressure when I sit on the toilet to pee and I push to pee or whatever and I feel a little pressure down there. It’s not on my rectum it’s more like the bone near it. And when I sit down I can feel it sometimes but it’s not all the time. Is this normal?