What Causes Nausea,migraine And Vaginal Bleeding?

So, I recently finished my period (about a week ago). On Monday morning I woke up around 5 (unusual for me) and again around every 20 minutes until around 6:30/6:45 when my alarm goes off. When I go get ready I feel nauseous. I thought it was because I was hungry so ate breakfast. The nausea went away after about an hour. The next day it happened again. Woke up early, nausea, and I also realized that there were traces of blood in my vaginal discharge. This time at night on Tuesday before I went to bed, my stomach felt nauseous. Wednesday morning same thing happens. And now tonight I have a migraine, (though I typically get migraines easily so it may not be relevant). I'm not sure what it going on. I've been looking around on the web and what is immediately coming up is pregnancy. Because I'm a virgin that conclusion is not plausible. I work in construction and dehydration did come up as one of the causes, but it doesn't seem to explain the bleeding. Would anyone be able to shed some light?