You can never get a false positive hun because the hcg hormone is never present unless your pregnant and this is what the test picks up x
You can do another test if u so wish to hun, i know i did two, i did like a strip test which i got from a clinic because the one i did at the clinic didnt work properly so the nurse told me to do one at home in the morning, and then i did a clear blue digital one just to see how far along i was because the test i did first the positive line was so bright it was unreal so i didnt need to know if i was pregnant just wanted to know how far along because it was impossible to tell when id conceived because i only came off the pill on the 30th July and by the 1st August the test read 3+ which means your 5 weeks or over so im still none the wiser! lol.
I have my scan on the 22nd October so will know more then lol.
Dont worry too much about being inexperienced no matter how much you think you know or do know it can never prepare you for your own baby, they dont come with a manual an its just trial and error believe me lol. My sons 3 an i still feel like i dont know what im doing etc. You'll get there an please dont be afraid of asking for help off your midwife or dr an never feel your going to sound stupid or be judged, because not getting help can make you feel overwhelmed xxx