Potential Pregnancy or AF pulling my chain?

Harley • I'm a stay at home mother of two and a wife. TTC#3
Okay I'm freaking out, my period was already 2 weeks late I went to the bathroom this morning to discover when I wiped there was a little bit of blood so not thinking I just went on about it being my time well no blood had been on the pad at all either one each time I changed it and I'm not getting anymore blood BUT when I went to the bathroom while out and about I passed what looked to me like a little bit of tissue from inside. I'm just curious as to what could be going on, am I pregnant or is AF playing with my emotions 😨