help me calm down

Tabby • 👼🏼👧🏻👶🏻🤰🏼
So I started spotting on and off the last three days after trying for 2 years I'm terrified if I lose this baby I won't get pregnant again. It has all been. Brownish discharge until last night and this morning and now it is actually blood I mean it's not a huge amount but it's enough it's freaking me out! My obgyn tells me not to worry but it's so hard. I'm 6 weeks today.