Twins or more

I didn't have twins but from everything I've seen/read sometimes testing around 4 weeks, 9-12dpo, will give you a dye stealer(test line way darker than control line) and it could indicate a twin pregnancy

I had nausea earlier(4.5 weeks compared to 6 weeks with my son) and just had a feeling. The dye stealer thing didn't apply to me, I took tests at around 4.5 weeks both pregnancies and got a dye stealer with my Singleton and not with my twins.

I had a feeling and my mom predicted it. I also had implantation bleeding around 5 weeks.