What do you think?

Okay guys, I need help. My period started right on time but was lighter than normal and only lasted 2 days (so very not normal!). Other symptoms include: really high libido, gas, off and on sore nipples, this thought that peanut butter and pickles would be good, although I'm not craving it, alternating tiredness and high energy, and a really high, soft cervix. I took a test the day my "period" started and it was negative. Should I retest? Am I just imagining things??