What’s going on with my body

So lately my body has been weird in aspects for my nipples hurting, food I love eating doesn’t interest me anymore, any type of food seems to upset my stomach.

The last time I had sex was July 25. And around that time I was getting off the pill. I took two pregnancies test around that time only cause my period was being weird by that I mean it was coming out as old brown blood very light but the test came out negative.

Now it’s August and my period is a week late. It possible it was to early to take the test?