Hi,i am sorry about that and i could realy tell what the problem is but i think the best thing to do is to go to the A&E and do a scan. Sometimes it could be that u are tired as sometimes our body is telling us that enough but we will not listen.
Even me i have been having heads on my left side of my head and feel dizziy but i have done some blood test but all is normal and still dont understand and the only thig i will do it take some time to go to the A&E wihich i know it will be a long wait.
All the best