Help!

zara

I am a month late on my period and have sore boobs, headaches, I feel sick (haven’t been sick though) I have back ache, cravings and have gone of foods I used to LOVE over the past 3 weeks???

But I’ve done 2 pregnancy tests one a few days ago and one about a week ago and they both came back negative???

I’m so confused! Does anyone have any advice?