So I know this original post it old, but in case anyone searching for "pregnancy symptoms" like I was, comes across it:
I've had a positive HPT and should be just 5 weeks today (so too early for an ultrasound yet) and the only symptoms I've had is I'm hungry with sore & swollen breasts. I knew something was up when I missed my period, though, so that is definitely a sign. I think everybody's different. I've also had cramps on and off this whole time (even after the positive hpt).
My first symtom is that I am really tired and I have to go the bathroom a lot. Other then that I have not had any other symtom until later on which was the morning sickness. THe only way to know if you are pregnant is by a pregnancy test.
There are a lot of symptoms. Put "pregnancy symptoms" in a search engine and see what could be going on! Please note that pregnancy symptoms are not uncommon symptoms and can be other things, too, not just pregnancy. Only way to know is to have a preg. test, doctor confirmation, and an ultrasound.