Symptoms maybe? HELP.

I've been really wet down there.. Or so at least it feels like it.. I've also been having mild cramps.. About two days ago I wiped and there was pinkish blood on the toilet paper but I haven't had that since.. Could I possibly be pregnant? I've taken a couple test before I got the pinkish blood and they were negative.. 
What were your first pregnancy symptoms? And when did you find out?