clearblue faint positive & first response negative!?

firt time mommy here

Okay, I'm going nuts here! I took a clearblue test came back faint positive & the next day I took a first response early detection test & came back negative. I know I should be waiting for after my period but I'm worried & anxious because I just had a miscarriage last month. please help!! anyone experience this?? Let me know if you not pregnant or ended up pregnant