Could I be pregnant…?

For 6 days now I've been feeling nauseous, I rarely eat and I've lost 10 pounds because of that. I only eat a little then I lose my appetite, and I feel feverish. And I also feel weird in my stomach is not a cramp or aching or sour. It's weird. I've been on birth control for maybe two years and I've been pretty consistent of taking them every day on time but lately I haven't. And I think i could be pregnant. I'm still continuing with my birth contol. But I don't know what to do. I took 2 pregnancy tests this week and it was negative. What should I do? Please help ladies