Mild fever with stomache. Get rid of it.

I'm getting mild fever(99°-99.6°) for the past one week with mild stomache mostly between my ribs and left area. I feel heavy and like I've eaten too much even though I eat just right and as much as my body asks for. The fever is majorly observed by the evening and disappears in the morning till noon. I'm also having cough with phlegm (which is not coming out) for more than 2 weeks now. I had developed slight weakness because of persisting fever but I'm doing better now. In addition to this, I'm also noticing some bad odour from my genital area which is unusual, there's no unusual discharge or anything and I'm also trying my level best to maintain the hygiene and cleanliness but I'm sometimes get light cramps with that stomache. Please suggest the needful, what it could be and what I can do to get rid of it.