Hi girls

I am working part time one day a week , I decided before I learned I am pregnant I decided to increase my working hours few more hours . From 1 day to 2 days a week.

Now I know I am pregnant and I am worried if I tell my employer they won’t accept my request because of my pregnancy. I know they have no right by the law but they can make other excuses .

Should I don’t tell them I am pregnant and I ask them to increase my working hours first ?