Started spotting 🙁

So according to Glow I am 18 days late. I have taken 3-4 pregnancy tests & they were all negative. Also went to have blood drawn and my Dr. also said it was negative...

My sister who is 21 is pregnant and is due in Nov (yay😍) said that even at 5 weeks late her blood tests and pregnancy tests said negative.

So I’m trying to stay positive and wait but then today..

I just used the restroom and I started spotting😭

Should I wait to see if my period actually shows up for real or should I just accept that I’m not pregnant..

Help! We’ve been trying for 2 years!