Could I be pregnant?

Ok, so back story.....I was dx'd with PCOS when I was 17 years old.  Had my first period at 15 and that was my last one till I was dx'd at 17 and put on birth control.  When i was 18 I went off birth control because my husband and I were ttc.  I am now 28 years old and have not had a period in about 10 years now.  Early June I spotted, I was not sure if it was spotting or if it was caused by something else....tmi (hubby and I had somewhat rough sex)  so I thought that could be the cause of the light spotting.  It lasted 2 days and that was it.  It's now a little over a month later and I am questioning if it my mind playing tricks on me, or if I am pregnant.  Breasts are extremely tender, craving weird foods that I normally hate like watermelon, hot dogs, and yogurt.  You could not have paid me before to eat them and now I cannot get enough.  I have been throwing up in the mornings but by mid day I feel better.  Urine tests came back negative, but I do know that PCOS can mess with those since my hormone levels are off anyways.