I had unprotected sex with my boyfriend like 2-2 1/2 months ago and I have been having pregnancy symptoms(appetite changes, bloated belly, lighter and shorter periods, fatigue, headaches, discharge, etc.) but I've taken two tests that were negative, is it still possible that I could be pregnant?

If you have had 2 periods it is doubtful.

Do you take the pregnancy tests first thing in the morning as soon as you wake up.

It is very doubtful, those are all signs of many other things. Normally it is NO period, not a lighter one.

But if in doubt, a blood test at doctor to confirm.