pregnant maybe???y

I was wondering If someone could help me. I came off the depo shot in November. the past few months I've had a regular cycle. but this past week I've had a few symptoms and missed my period but I've taken two tests and both have come up negative. I feel like I am pregnant though. can someone please tell me what's going on?? *Hey guys, just wanted to give a quick update. took another test this morning. again it came up negative but still no period so I'm doing a hormone test on April 28*