Could i be pregnant?

I have been trying to concieve for the last two months. I am now 2 days over due my period. I tested yesterday and result was negative. I am never usually over my period due date if anything it would come before the due date. I usually get really moody and sore breasts that i wouldnt be able to touch them at all a week before my periods due however no symptoms at all. However today i have started getting a tingly feeling on my nipple and yesterday i had alot of creamy/sticky discharge (sorry for too much info). Im just wondering has anyone ever been in this situation before and am i too early to test. I dont want to be getting my hopes up. Thanks in advance for replys