I have a questions

I had my period from 11/23 to 11/28 and today I was spotting. So at first I was like ok maybe my period is coming but then I thought about it and I remembered I already had my cycle. The other day I went to get Measured so I can get some new bras and the girl from vs said I went up a cup size. So instead of a DD I'm a triple DDD. I took a test last night but it was Negative. But I also wasn't spotting last night I started this morning. So should I take another test tomorrow morning? Has this happened to anyone else before