I just found out yesterday I was pregnant! My period isn't even due till Monday! I'm only 3 weeks and 1 day pregnant! I had blood work yesterday because I was already going in to check my progesterone to make sure I'm ovulating! So they called my progesterone is 19.5 which is good but my hcg is 18! They want me to come back Monday to recheck my hcg! I'm concerned cause it's low but I'm only 3 weeks, my period isn't due for another 4 days! Is this a normal level compared to how far along I am? Need help! Thanks