Hairloss please help!

I had my son almost 3 years ago... and I started to lose a lot of hair, but I didn’t think of it too much cause I had a lot of it, also y breastfed him for about 2 and a half years so I thought that that was the reason and as soon I stopped I got pregnant again but sadly I ended up having a miscarriage at 6 weeks, my hair is still shedding bad to the point where I can definitely start seeing my scalp and when I run my fingers through it I can feel it too... I started using a hair loss shampoo but I don’t see any changes, I wash it twice per week, and I started birth control too... idk what else to do any advice ? (Bedsides going to a doctor, I have no insurance due to Covid) have you tried moxilin?

Thank you in advance