Confused...

My last AF was supposed to show 11/13. I tested 11/23, 11/22, and this morning. On 11/23 it was negative. On 11/22 my tests showed faint positive. I started to experience symptoms such as increase in discharge which a lot of women said they had during pregnancy, being extremely hot, etc. But this morning my tests looked negative...

I Started spotting a few days ago after trying a new lube. I noticed immediately that it irritated me down there and I have been spotting a light pink since. Could it have caused a chemical?