[Amadou]

Unfortunately I just got hit by 2 projects in a row that passed 3x overage. I quoted 2 weeks to finish, but they both ended up taking over 6. I'm probably not even making minimum wage for the last couple of months.

Those are fixed-bid projects, not time & materials with time increments of days or weeks.

But the real reason I am commenting is to point out that your results - 3x overage - are exactly the rule of thumb that gets cited for fix-bid: Take your expected level of effort and triple it.