This is getting old.

Me and my SO have been TTC for about two years now. I'm about a week+ late. (Last month was also a week late) and this time Ive been mildly nauseaous, been peeing like crazy (but may also be due to vitamins im recently taking), and today I woke up sore from lower abdomen like.If I have done a bunch of sit ups... what are my chances?