preg and spotting

Noticing some brownish spotting. I KNOW MOST WOMEN WILL SPOT OR BLEED. I guess I'm just nervous. I'm between 4-6 weeks. We were trying for 5/6 months- one round of letrozole and We are Preg! But I've just been a nervous Nancy having all the scary thoughts of misscarring, eptopc preg, anything! I went for blood work- then back 2 days later- doubled. What can we do as woman to relax when we see blood?!?!