I'm 35yrs female.my 1st day of last period was 24th nov,last date of intercorse was 6th dec,I took pragnancy test in home last week that was negative,but I feel like vomit,morning weakness,change of mood and high blood pressure(which I monitor regularly twice a day)m I pragnant?

It is far to early to test, if you just had sex on Dec 6th.
That is why a negative test, even if pregnant, it will show negative this early

Also why do you check blood pressure 2 times a day, do you have health issues ?

It is also too early to have signs of pregnancy, so any signs will have little to do with pregnancy.

You will have to wait to see if you have or miss this months period, if you miss wait a week or 10 days and then test.