15 days late

So I’ve been TTC for over a year now and it’s been hell😩 every time I feel confident that I got my little bundle of joy I get my period. BUT now I’m 15 days late on my period. the past two days I’ve been super tired, nauseous, sore/tender breasts and nipples, and hungry like crazy. I also have slight pain on my lower abdomen.. I’m nervous to test because I don’t want to be let down again.. should I just test and get it over with or wait a little later? Someone help🙁