12 weeks pregnant. Lost Symptoms

Ive completely lost the symptoms ive had until now. All i have is sore nipples. My breasts are no loger swollen. And ive completely lost the "bump" i thought i was forming. Like, below my belly button (uterus area) was going hard and bloated and now im completely back to normal. I no longer feel a difference when i sit in a chair or go to get up. I am internally freaking out. I had a missed miscariage in december and am afraid it is happening again. Soo stressed out.