It took me about 6 months of chelation (with cilantro and chlorella) before I began feeling better. It took my friend a bit longer to feel better using the Cutler Protocol.
How long it takes to get the metals out would depend on the method you use, how much metal is in your body and other individual circumstances. It would likely take months if not years. The fact that you only had 2 fillings suggests it won't take you as long as me (12 fillings) to get the mercury out.
I've never tried Pectasol, so I can't really comment on it's effectiveness.
You might also look for foods which boost glutathione production in your body. It's your body's natural chelator. Drinking lots of clean water helps with chelating too. I can't vouch for the cleanliness of Egyptian "purified" water though. I didn't seem to have any trouble when I was drinking it while I was on vacation in Egypt.