HELP, pregnant or no?

(Bare with me things might get confusing) 

I took a pregnancy test maybe a week or 2 after I TTCed and it was negative. Then a week later I TTCed again and started feeling nauseous, sore breasts, I had some spotting for about 4 days the next day and so fourth. I TTCed Friday and Saturday night and now Sunday I feel cramping and stuff. Is it possibly that I tested to early last time and now I've been pregnant for a few weeks and that's why I feel this way? I know this sounds crazy but im confused. Someone help please.