I was hoping to get some opinions

(Sorry if I posted this in the wrong place).
I have had 2 c-sections (last one was 3 years ago) and just had a very early miscarriage - was only 4 weeks pregnant. During the ultrasound the tech had a hard time seeing certain things because of the scar tissue. Could scar tissue be a reason for the miscarriage? In other words, can scar tissue keep the embryo from implanting properly?