Hello , my last period was 29th march,I had sex 1st April but he said he didn't ejeculate, I then had sex 8th April with a new bloke and he did, did a test 27th April which confirmed I was pregnant 2 to 3 weeks, my scan at 12 weeks said last period 31st march, I'm now 23 weeks pregnant due 5th January, who is the dad? I was OK but got back involved with second bloke and he now wants to be involved its making me ill I'm not eating or sleeping

You won't know unless you have a DNA test after the baby is born.