hi carly
i had normal periods for the first 2 months of my pregnancy an didn't realise this untill i went for my first scan and was told the date of conception, so there is a possibility the baby is your ex's especialy as you had sex just b4 ur period as this is when you would be ovulating.im really sorry to hear about your problem, just wen you begin to be happy with your partner again, have you discussed this with ur partner?i hope everything works out for you :)