I need help

I need y’all guys to help I’m a first time mom and this is the first w this happened to me after I had to miscarriage i had my last period on November 19 the pink 🩷 is when me n my husband had sex December 27 to January 6 I started to Storting but it was a brown with clear what does that mean …. Jan19 I want to my Obgyn appointment I need to, but nothing was showing. It was just a sack, so I am totally confused. They did bloodwork and urine test and it came back positive. I have to go back on Friday for bloodwork and sonogram, so I am totally confused on how many weeks I am and I took three pregnancy tests on top of that and it came out positive before I went to the OB/GYN and then I made an appointment with my OB/GYN and they did bloodwork test and a sonogram and everything came out positive so I am totally confused does anyone know how many weeks I am I need your guys helps on this app it’s telling me me am 2 weeks pregnant 🤰 so if I’m doing this right my baby is due oct 15 right lol help me out please