In need of some reassurance😩

Okay, so, how exactly do you keep your anxiety calm while ttc/being pregnant after a miscarriage?! I got a faint positive this morning and it made me so happy! But I can’t help but to think the worse.. I don’t want to tell family, and I’m hesitant to tell my boyfriend. Because I honestly feel like it took a bigger toll on him and I don’t want to put them through all of that again... although I know it would make things worse to keep it from them.

Opinions, advice, anything??