pregnant or pms??

Rissa • Dawson James 4/2/19 🍼💙 Sophia Rose 9/3/21
I had sex on May 1, while my fertile window was open, and my chance of pregnancy was 27% high. I took a First Response Early Result 7 DPO, it had a very very VERY faint line. The next day I was in such a rush to take another one, because I wasn't sure if I believed it or not. So I must have diluted my urine because there wasn't even a shadow. Today, 9 DPO I took a clear blue plus with first morning urine and got a negative. Could it be too early to test? I'm gonna try my last First Response tomorrow as that was the first test I got a faint line with. 
My symptoms by DPO are: 
2 DPO - Spotting very very light. Almost as a pinkish color. 
3 DPO - Spotting occured again. This time it was brownish pink. 
4 DPO - Cramping in my one side of my abdomen. Acid Reflux. Temp was 99.0 - 99.5 steady. 
5 - 8 DPO - Nausea. Light cramping. Constipation. Gassy. Lightheaded. Hungry very often. Can't sleep at night (Went to bed at 4AM and woke up at 9:30AM), headaches that linger. 
9 DPO - I just feel off. Still so hungry. I could've sworn my period started today but it was just discharge. Cramps came along with my underwear being wet when I woke up this morning. I still have acid reflux and my back is a little sore. My nipples get a light stabbing pain in them here and there. 
UPDATE: here's the pictures of my clear blue plus I took this morning