I wish we could know instantly

I wish there was a way to know instantly if we are pregnant. Because this TWW is killing me...even something as simple as like your hair changing color for like 48 hours? I dunno, crazy unrealistic, I know. But y'all get it right? It would be so much less stressful that way. I'm here at 8 DPO. Not sure if I feel anything or if I just wanna feel some thing....i had a BFP back in January and miscarried at 9 weeks. So I find myself comparing every little thing to the first-time I was pregnant...the sore chest which I don't have now. The cramps which I do have now. The feeling gross which I do have now. It's so annoying when every sign is also another sign but you shouldn't take any sign seriously...ugh..