Hey so this might be a weird question, but I am only 5 weeks along and I was wondering if it's possible to have an ectopic pregnancy without any other symptoms than back pain? I have normal pregnancy symptoms (morning sickness, sensitive boobs etc) but I also get severe back pain in my upper back the odd time. It's happened about 3 times and everyone else says I would have other symptoms by now if it were ectopic. Any ideas?