Could I be pregnant??

Okay. So I’m 2 days until my period almost 1 day. I took a pregnancy test with fmu when I was 4 days away and it was negative. And I took one tonight(clearly not fmu) and it was also negative. My boobs feel different, they’re usually a little tender leading up to period and a little veiny but they’re more tender than usual and in different areas and are still veiny but after intercourse they’re even more veiny especially around my nipples. My back hurts but always has because I have big boobs but this is the first time it’s more around my lower back. I’ve been having cramps that are more so directed to my left or right side and lately it’s been shooting to my thigh. Its more like twinges or random sharp pains. I’ve been crying more easily and more moody towards my husband. I’m just curious on if I’m out or not? Usually if I have sex two days or so before my period I’ll start spotting but I’ve had sex for 2 days now and nothing?? Soooo I’m not sure.