soo i went for my early ultrasound on the 25th november they say im 7 week 2 days my lmp was 27th septmeber and my august period was 26th i dont understand how this can work out unless iv ovulated really really late. i took a pregnancy test on the 28th october and shown faint positive how long after until conception do u see a faint? i slept with him on the 11th october 15th october 16th october 18th october 19th and 20th. i really need to know when i concieved.thanks xx