Am I pregnant??

Hi all,

I have been trying to get pregnant since June, but lately I have been feeling a little different with nausea, bloating, my breast feel much more bigger its little things that my body feels different. However, I got my period 3 days later than projected and felt super sick the other day but have had negative tests. Could it be that I could be pregnant. I have been seeing that some women have their normal periods and negative tests only to find out they are pregnant, could it be my case??

Help!