HELP! Going crazy! Hair shedding!

Ally • Married 💍 Pregnant with my first 🤰🏻

Been shedding hair for over the past 4-5 months (which is when I got off my patch for birth control). Noticed my hair noticeably thinner than it used to be before. When in the shower, literally strands of hair comes out. Losing my mind over it! Taking vitamins, prenatal, trying out collagen and even a hair elixr that’s suppose to stop hair shedding. Any tips from you ladies! Help!