Bath time !!!!

Hi bit random but it stresses me out so I need to ask... I have been ttc for a couple months now with no luck . I love to have baths but every time I have one I stress out that I shouldn't be. A friend told me when you are pregnant you shouldn't have hot baths and every time I have one I think what if im pregnant and I ruin it by having a bath ... Is this true or is it not such a big deal at the beginning?