Collagen peptides

Anyone taking collagen peptides? I do not have the wonderful pregnancy hair. I have quite the opposite and am losing hair. My thyroid came back normal. The doc didn’t give a hard no or yes they just said there’s different opinions, let’s check the thyroid. Which again, came back normal. I’ve looked online a million times and I see tons of pregnant woman take it. It’s a protein and organic, how bad can it be? There’s no added ingredients. Thoughts? I feel like sometimes when it comes to supplements, regular doctors Always say no, pregnant or not pregnant.