Pregnancy after c-section

I delivered my son 20 months ago via emergency c-section, he was my first c-section and pregnancy. Since then I’ve had two early miscarriages, one in March and one in July. Both times my lines never got dark and I was only pregnant for a week both times before I bled and miscarried. I went to my OBGYN and she wanted to do an ultrasound with dye to look for scar tissue, but I had to schedule the appointment when I was on my period to make sure I wasn’t pregnant. She also told me to keep trying to get pregnant during that time. I had a period in August but also had a 102 fever and was sick, so I couldn’t schedule my ultrasound. I recently found out I was pregnant on September 1st, my lines have gotten so dark and my HCG doubled when I got it tested. This is also the furthest I’ve made it in my pregnancy besides with my son. I’m almost 5 weeks pregnant, but I’m still so worried I might have scar tissue and it will cause me to miscarry. Other than two early miscarriages, I don’t have any other symptoms that would count as scar tissue though. I guess I’m just worrying and was hoping for some peace of mind from someone who’s been through something similar. 😅