I am having pregnancy symptoms am I pregnant?

I am eighteen and have had my period since I was 9 and it is very regular. They are never late or irregular or anything like that. I have never been on birth control or any type of medication. I started my period on June 28th and ended on July 2nd. I had on June 26 and 27 then again on the 29th. On July 6th (ten days after the start of my period) I started spotting light pinkish blood but it wasn't enough to fill up a pad or anything like that and then the next day I wasn't spotting anymore but since then have noticed a lot of signs of pregnancy such as tired all the time no matter how much sleep I get, I am eating non stop, cramping, bloating, headaches, nausea. My boyfriend is 30 and has a vasectomy though, he called his dR and he said that anything is possible. I won't be due for my next period until the end of the month so I can't really take an accurate test until then but I don't really know what to do. I am not sure if I am or not and I am getting nervous about it.