HELP !!

I need help i have Pcos and this is my first cycle that i am trying to concieve ..well i tested this morning with the first response and it came back like with a faint line but then i tested again right now but with the Clearblue digital test and got negative. I dont know if I should wait for tomorrow and test again . Has this happen to anyone ? And still be pregnant?Because i got excited that i was pregnant but now that i got negative i just dont know