This sounds so strange but I woke up 7 days after ovulation with cramping and a crazy feeling I was pregnant with twin boys out of no where and laughed at myself as I have 3 fertility issues and only tried for one month. When I got up I had spotting. I didn't worry or get upset that it was an early period because I 'knew' I was pregnant even though I have two children and never had implantation bleeding either time. With my two children I couldn't get a positive test for 6 weeks but I tested anyway 4 days before my period was due and got a faint line. Two days on I have 3 faint (but still obvious) tests and googled implantation bleeding and it suggested it could mean twins. Anyone have implantation bleeding on just one pregnancy and have or not have twins?