Headache heavy nose for 7 days.

For the last 7 days I have seen some symptoms...The first few nights when I slept, my head was heavy.It was a mild  biting like feeling  a little bit on the back nd left side  of the head, left side of cheek nd behind nose  especially at night...and I sweat extremely while working in kitchen.some one suggest me to check bp .I have checked nd my bp and it is low70-100..now from last few days i feel cold like feeling in head.no caugh no fever...biting like sensation in head.a little beat of mucus in upper nose..my nose feel heavy not runny nose..but no breathing problem..but a little fatigue.no caugh at all..but inside of my head has been tingling for the last two days while walking..or working excessively.