My SO and I have sex everyday and at least 2 times a day. The last tine we had sex was at 2 am this morning...but its 9:30am now and both our girls are up..I woke up with diahrea and have bad cramping in the front and back pain. cramping n pain is still happening. I just started this app n not all my period entries are perfect but close! Could it be implantation ? I took an ovulation test yesterday and it was negative. I also have nasea and my mouth is super watery..a lot of watery saliva. App says I ovulate on the 19th. HELP!!!