Reoccurring losses

Natasha • 26 and TTC #1
Hi haven't really talked much about this so kinda hard for me. I have been TTC for the last 10 months but been having reoccurring losses at 2 to 3 weeks pregnant getting all the symptoms and faint positive tests had 3 known one's with positive tests but I am now so scared of TTC as I don't know what to do or what I'm doing wrong. I have already been to see my family doctor who has referd me to the hospital but that could take months before I get an appointment. Already had some tests done including an ultrasound as the wanted to check that I didn't have pocs which I don't. I am overweight but slowly reducing my weight. I do everything I can right like not taking any medication and I don't smoke or drink at all. I just feel so lost right now.