Headache nausea and blood from mouth.

I have 3 problems: I am having constant headache from last 3 wks mostly near eyes and temple area. It worsens whn I wake up or press d region. I do have cold but cylindrical glasses, but what can be reason of such chronic headache. Along with that I have blood in my spit sometimes it's red and sometimes yellowish red. It comes with and without any cough. The blood from mouth started on 20th Mar to 25th Mar..I got my blood and sputum (may be for TB) tested on 22nd Mar, both came normal and negative then it was ok for 2-3 wks.. But now also from last 4-5 days again blood started coming out from my mouth. Another problem is loose motions and feeling nauseated. Its like motion sickness like when we travel we get our mouth filled with saliva just before vomiting. I didn't vomit though and diarrhoea is also not intractable but there's a feeling of loose motion nausea and burping all the time. My body temp is 98.7 in morning while it's going up to 99.4 in the late evening. Shd I be worried ?