Hot baths, are they okay?

Chanie • 22 year old first time mom, completely scared out of her mind! Pregnancy was unplanned and happened way too early for us; but ready or not, baby incoming. 😊
I'm about 6 weeks and get really awful cramps and almost constantly freezing. I like to take really warm baths for 30-45 minutes to relax and take the pressure off my back/pelvis and to get warm. It works wonders! But I've been hearing that it can be bad for the baby? Yet my mom says she did it all throughout her pregnancy and I was fine. And I heard that it was okay as long as you didn't have to ease into the water. But I've taken hot baths/showers all my life though and never ease anymore, so used to it so it's hard to say. I'd guess the water temp is 99-100 degrees? Could be a bit higher. Always keep cool water by me and never feel overheated. Is this okay?? I usually do it 3-4 times a week. I just don't wanna hurt my baby.