On May 27 which was 26 days ago me and my boyfriend where about to have sex he whipped his tip and squeezed it to make sure he had no cum and he didn’t so he put it in and wasn’t even in for 10-20 seconds and something interrupted but he did check his tip when he pulled out and he saw no cum and my period is three days late I tested yesterday and it was negative am I ok or when should I test again by the way I had ovulation discharge around 8or 9 days after we had sex