Advise needed!!!

Lisa
So I've been trying to have sex with my hubby when this app  says I ovulate. We would love another baby. We have one son who is one in three days actually! With that said I started with cramping and no signs of period. I'm currently three days late according to the app (which has always been accurate over 2-3 years) and Ive never been irregular about 29-32 day cycles. Two negative preg test but the cramps are killing me and I've never had them pre period except when I was pregnant with my son and I had a BFP right away with him. What could it be? I also have a scant amount of white discharge which I never have had before the last three days. Could I be pregnant? Am I crazy? Idk. Just want opinions from ones who have been through this. Also baby dust to all TTC 😘🙌🏻