Thoughts?!?!

Ok so my husband and I had sex the 22nd of last month and then this last Sunday. (I know that’s not a lot we’ve been working a ton) We don’t take precautions as we had been trying to get pregnant but hadn’t had any luck so we’ve slowed down some. Anyway AF happened a week before the 22nd. Two days ago I noticed my lower stomach in my uterus area felt kinda achy and sore which is unusual. It continued into yesterday and then today I experienced some sharp pains/cramping in the same area and now my stomach feels like jello. Best way I know to describe it is how your legs feel after a long run. Iv also had a lot more discharge today than usual. And I’m absolutely exhausted which may be because of work not sure but last week I felt energized and good and this week iv been dragging horribly. We don’t have any children so I’m lost on what being pregnant for me would feel like. I need some thoughts and advice. Next AF isn’t due until the 18th of this month.