Questions on advice before I take an HIV test?

I am a 24 year old female and I have been in a committed relationship with the same man for almost 6 years and both of us have remained faithful. I was actually his first. But probably 7-8 years ago I had unprotected sex with a few guys just being young and reckless i was around 16 or 17 not until recently have I became so concerned with having HIV or aids. I get multiple yeast infections which is directly linked to aids. I also also wasn't aware that you could remain symptom free for 15-20 years and that a CBC or pap-smear didn't detect it. Now I am so scared I made an appointment with my gynecologist to test me but i am scared beyond to the point where I can't function. I need some advice on how to deal with this. I know the only way to know is to have the test and wait for the results but my world and dreams are going to end if I have HIV or even worse aids by now. Not to mention my boyfriend will probably hate me for me being his firsthand giving him aids. I won't be able to have a family or lead a normal life. I wish I could go back in time and change what I did but I know I can't. Any advice would help. Also how long after getting tested can i expect results?