I just don't understand 😥

I've taken two pregnancy tests. One 6days ago and one this morning. Both negative. My period is due in two days with no signs. All I have is constant heartburn (which is not normal) , and my boobs seem puffy. Not my nipples, but my boobs seem like swollen. I have no spotting nothing, just had a small amount of discharge for about a week. 
We aren't actively trying but we would be happy if I did get pregnant. I've been waiting for that positive hpt for forever. I just am tired of this yes I'm pregnant, no I'm not , well maybe I am, type of roller coaster. 
And whenever I post something here on glow I get like two responses. So hopefully this time I can get some actual responses. 
Should I just give up thinking I got pregnant this cycle ?