All pregnancy tests are the same so name brands are not necessarily the best. My chemistry instructor says it probably cost as low as 50 cents to make but retails it out a lot more.
During this time, its best to enjoy feeling like any other day. Your pregnancy hormones may kick in later on or maybe it wont. Congrats.
If it was ectopic you would know. You would most likely be in pain. Try to relax and not stress