Thinking too much into it

So I'm about 16 days late for my period. Ive been trying for 3 years with no luck and I have endometriosis and just gave up but lately I've been too nauseous to eat and just opening the fridge makes me want to vomit. My nipples are extremely sensitive and sore to touch. My acne the last few days has also gotten bad like it came out of no where and won't stop. I'm to nervous to take a test because I don't want to be disappointed, but it's starting to mess with me.