High Fever, Cough, Cold since 5 days.

I've been having High Fever, Cough and Cold since 15th. I'm not able to sit, walk straight, eat anything, even getting out of bed has become difficult. I'm always lying in the bed. My head is always spinning and have extreme headache. I got tested for dengue, malaria and typhoid, they're all negative. The fever reduces for some time, when I take Crocin and do wet bandages or take a shower, but in some time it spikes again. I've mostly eaten cucumber, water (plain and glucose), and tea and biscuits, each once a day. Had very less food when fever reduced a bit, else I'm not able to eat. Also, sometimes it feels like I'm going to puke, and when I try, it doesnt happen, instead I'm burping a lot. Please help. I've been taking 2 medicines - Crocin and Cetcip. Please note - my period is irregular due to work stress, sedentary lifestyle and overweight. I took 3 pregnancy tests, all were negative and my cycle is 41 days late. Please help. 🙏🏻