it's been a month and a half after a risk i had with my boyfriend. i've had two periods since then (first period was light-4 days, and second period was heavy flow-5 days) and 3 negative home pregnancy tests (i took all 3 with my first morning pee, weeks after the day of the risk). i'm thinking of taking another hpt. is it still possible for a false hpt result at this point or am i really not pregnant? (i hope im not, based on the facts i have already)