When to test? Fiancé driving me nuts lol

So my fiancé is driving me nuts. I am on BC have been since Sept of last year and have been religious about taking it. I had a very light period. Like barely needed a liner light. Started on time lasted about 4 days like normal. Only difference was how light it was. Afterwards I had a few days where I was moody (normally I am supper emotional a day or two prior to starting but not usually moody/ crabby) then a few days where I was lethargic and nauseous.

My fiancé is convinced I am pregnant thanks to a friend of his. I already took one pregnancy test that was negative but his friend said it may be too soon to test.

When should I take another test? My next period isn't due for almost 2wks. Do I just wait and see if it starts on time?