Chemical last month..period two days late

Liz
Okay so last month I took a pregnancy test  two days before my missed period and it was positive. Every day the line got more and more faint and about four days later it was gone. My period came two days late. I was super bummed my husband and I are ttc (our little man just turned five and really wants a sibling). Any how I adjusted my days on the app and I was supposed to get my period two days ago and it's a no show. My period is always exactly on time. I have no cramps. My boobs hurt so bad though, which isn't really a normal period sign for me, last month they hurt really bad and that's why I tested early. This month I waited until missed my period and both days I got negative results. Anyone else experience this? Think I could be pregnant and just ovulated super late and that is why the negative results? If.