My daughter was supposed to been a twin, and I think it ended in an early miscarriage due to having heavy bleeding and 2 sacs... I didn't get a positive with her until after my period was due!
Both my boys (my second and this baby) I thought were twins again, both times I had bright bfps at 3 weeks pregnant roughly a week before my period I also got a 1-2 on a digi at 10dpo and I just assumed twins due to the obvious high hcg.
But nope! There was only 1 last time and only one this time lol