Please can someone give me some advise. My last period was on the 16th July my cycle is usually 25-26 days. I had sex with my partner on the 23rd,24th and 25th but stupidly made a big mistake of sleeping with my ex early hrs of the 29th. I've done 3 clear blue digital test first one being on monday and they all show up as 3+ weeks does this mean it's my partners? X