First off, I am 19 years old. I just have a few questions... maybe someone can help?

I guess I would say my boyfriend and I are trying to have a baby considering we don't use any form of birth control. And I think we may have succeeded.

Recently I have been having some symptoms along the line of pregnancy but being women we know these symptoms are often too close to af. I am much more tired than ever. I sleep almost 9 hours a night and am ready for a nap at about 12 in the afternoon the next day. I have been nasuses for the last couple weeks (actually gotten sick 4 or 5 times) and have noticed my nipples darkening. I started what I thought was AF on Saturday, May 5, it was gone the next day. Tuesday, May 8 it came back around 4 in the afternoon and was gone that night. My periods are normally regular and last about 5-6 days. Around the same time I noticed some purple/blueish veins on my breasts, almost 3d like. My breast are very sore and even in a bra I feel very uncomfortable. I am using the bathroom what feels like 100 times a day. I go and 5 minutes later my bladder is completely full again. Some days I lose my appetite completely and some days I feel like there isn't enough food in the world for me. Also foods I used to enjoy and smells I used to like are making me want to get sick. I also feel like I am on an emotionall rollercoaster! One minute I am getting extremely mad over something so little (like having no milk in the house) and then I am crying over it and then 5 minutes later I am laughing at what an fool I must look like!!

I was just wondering if anyone has any idea if maybe these are signs that I am indeed pregnant?? Is it okay for me to test being as I "may" have gotten AF??