Painful Rib Cage, Sneezing, Cold, Vomiting, Coughing, Irregular Period. Had Unprotected Sex. Can I Get Pregnant?

i am having pain under my left I guess what u would say rib cage,on and off through out when I am home im burning up my who body hot to the touch but I freezing like it almost unbearable how cold I am I feel like im gonna puke I am coughing and sneezing and gaging like im gonna be sick at the same time and im burping a lot lately when I eat some time I feel like im gonna puke.i know im not pregnet cause I haven't had a period in almost a year.the ain don't hurt all the time but when it does I get hot cold feel sick and then in like a few or couple hours I feel fine I don't understand its been going on for like a week or so and the last couple days it just seams to be getting worse and worse I plained on going to the dr if it keeps going the way it is if itgets any worse im deff going to the er iwas almost on the verge of crying last night.please help me and I have another question ikeep looking on line and I don't seam to get a straight answere can u get pregnet if you don't have a period like can u ovulate before your period or ony after cause I have unprotected sex with my bf but we only do it cause I don't have I period so I don't see no need to worry right ?