I am 19 days late for my period, pregnant?

I am 19 days late for my period. normally i am on time and everything is fine.

This month however i never even felt like i was going to get my period because i didnt have any pain at all.

Last week i started spotting a bit but nothing majour just literally only when i went to the toilet and nothing else, i thought i was coming on my period but nothing ever come of it.  This only happend for three days but like i said it was only ever when i went to the toilet, at this time i was getting over a summer cold/ chest infection and thought the pressure of the coughs was factoring the blood.

There is still no sign of my period but im getting other symptoms and i just wondered if anyone can clear it up for me.

All i want to do is sleep all the time, ive been going to bed earlier but having interuppted sleep. i wake up for no reason.

I never normally need to go to the bathroom but now im going more and when i get the urge to go i have to run there quickly.

I have been feeling sick especially when i eat certain foods and i gag quite a bit but again i thought this could be because of my chest infection.

My Chest doesnt look like its swollen but being a DD its kind of hard to tell, but they are hurting a little.

i dont know if im dramasizing because i know im late and then my brain is playing tricks on me, but im just a little confused. Ive done two HPT and they have both been Negative. Do you think i should do another one or wait a week and go to the doctors?

any help would be greatly appreciated.