So Sad and Discouraged!

My period was due yesterday but when I woke up it hasn’t started. So by lunch time I said I’m gonna take a test. So I take the test (first response digital). To my surprise, yes+ appears on the screen. After 13 months TTC. Im freaking out. Goes to Walmart to grab another test. Waits a bit. Takes the test. The ClearBlue weeks indicator. Not Pregnant appears. I am devastated. Around 6 pm I take the other one. Negative. I just don’t understand how a digital test can be wrong. Now AF is here full force. I feel like someone has kicked me in the worse way! I’m so discouraged and want to give up :( It wouldn’t hurt so bad I’d it came back negative in the first place.