What Causes Persistent Nausea And Irregular Periods?

For the past 5 days, I have felt like I am going to throw up 24/7. My husband and I got married last August, and we are not normal when it comes to our systems. I don t get a regular period (haven t had one since August) and he only has one working side. I am just wondering if it is possible that I may be pregnant, or not, and if not, what the heck else could be causing the feeling of vomiting all the time. I hardly feel like eating, yet I force myself too. I have been sleeping a lot more lately too. We don t have insurance, so heading to a doctor right now is out of the question. Thanks