Freaking out

Megan • Megan💄 Ortho asst🦷 fur mom to two GSDs🐶 3 miscarriages 👼🏼 Gracie Mae🌺
So, back in December I miscarried .. What I felt was cramping and then it became a period.. 
Now, I tested positive yesterday.. I back tracked and it puts me at 5 w 3d today.  
I've been having some cramping but nothing major (I know that can be normal) but I just whiped after going p and had some brown discharge.. 
I'm so scared to go through this again.. Any help would be great! Thanks.