What should I do

So I’m 11dpo. And I tested it was negative sadly. My period is in 3 days but I do not feel like my period is coming at all. My feelings have been different way more than usual. I’m constantly hungry. I have back aches. And TWO major one is I’m ALWAYS out of breath I can’t even go off without being out of breath. AND my stomach has felt constantly TIGHT and extremely hard which is not at all anythinf I’ve ever felt. Almost like stretching. Which is NOT. period symptom for me and tiredness is not a period symptom to me and I’ve had it going on 3 days now and it’s so bad. And no I’m not spotting for pregnancy symptoms because I didn’t even think of pregnancy until I started feeling this way which is why I took a test at 11dpo. Thought???

I bought 2 tests. So I have another one not open. First response. Should I wait until after my period is suppose to come to test so the 22nd test?? Or wait until Christmas?