If you are concerned enough to want to speak to a nurse or doctor, then you really should take off work and get checked out whatever is concerning you. It's not a good idea to ask for medical advise on line - IMO. Just my opinion of course. IF it is something potentially serious, you need to be seen in person - and not rely on what someone might tell you here. It could be good advise, but then again, maybe not. Hope you'll be okay.