Endometriosis or pregnant?

I need answers! I have been having pelvic pain, and last night it shot down my right leg and hurt during intercourse, and a week ago I was having cramping. My period was short to 2 days instead of 4! And wasn't very heavy... Me and my SO have been using condoms or the withdrawal method. I have had headaches, what feels like a mild case of heartburn, and TMI but gasy lately. Been super moody and I don't want to take a test because I'm afraid it will say negitive and I'm sure it would but i have a gut feeling not to take pain meds for my headaches just in case. I've also been super tired and sick at night.