Hopeful mommy- Discharge?

Karina
Hello all! I found out I was pregnant last week, I believe I will be 6 weeks tomorrow but not positive because I haven't gone to the doctor yet. I've been having mild cramps since before I found out and today I noticed a little bit of brown discharge when I wiped. I've read it's normal and honestly I know I shouldn't worry to much since I actually had red blood spots with my son in my first pregnancy, it turns out I am O negative and needed a shot. I guess what worries me is the cramping, I didn't experience that with my son, so I can't help but be worried. I haven't gone to the doctor so I haven't got the shot, I'm going to try my best to go this week but with the Thanksgiving I'm not sure if it'll work out. Is any one else having the same problem? I would be so devastated if I had a miscarriage. Reading the comments on these threads comfort but also frighten me.