So confused...

So my hubs and I decided to start trying for a baby in April. I don't feel like we baby danced enough but my period was a week late in April and when I got it there wasn't any cramping at all it was just flow, maybe a little bit of cramps. But since I've been so constipated (sorry tmi) and I thought it might have been irritable bowel syndrome because everything was just off. I took a pregnancy test just to make sure if it was implantation bleeding and it was negative which I am used to sadly, but I'm still feeling some pinching and pulling sensations in my abdomen. I have been more fatigued lately but I also work full time, school part time and have two toddlers at home. Now that my period was late I'm probably not due for another 3 weeks. It's just so confusing cause my body feels different but every time I think I might be prego, I learn I'm not, I'm 28 and just want a baby from my body. So I guess I'll test again if my next period is late or missing ?