Can it fit 5-7 underwear, 5 shirts, and 3 sweatpants, a couple of sweatshirts or hoodies and 1 jacket (might be cold where I am going), maybe 1 jeans, 2 different shoes (in a box)? I highly doubt it. On the photos of your backpack, seems like only 3 jeans fit, that is maybe 2-3 hoodies. This does not include toiletries.
How many and what kind of clothes did you carry and what was your folding method (if you can explain)? I can't believe "weeks worth".