I'm sorry that you are going through this. I don't want to alarm you but you must contact a medical professional. Have you contacted a doctor today? Do you have a doctor that you can call afer hours? If you do, please call him/her right away. If not, can you get to the emergency room just to get checked out. It's probably nothing serious but it might some require medical attention.
We're not medical professionals here so it's really had to guess what's going on. Please contact a professional and keep us posted.
Best of luck to you.