10 POINTS!! ADVICE! Do you think im pregnant?

Okay, here's my story.

I have a 18 month old.

My finace and i are TTC for baby #2 :)

We are 19.. So im not sure if tht means anything..

We are finacially stable so PLEASE no rude comments..

We take parenting to heart so we are NOT like any other 19 yr olds..

--* With that being said, here is what happened..

We done the deed on DECEMEBER 4, 5, & 7.. no protection, no pulling out.

We thought i was for sure pregnant because it only took one time with the 1st..

Well i got AF (or what seemed to be AF) on the 12 of DEC.. she usually lasts about 7-9 days..

well the 12th, it was like a normal period, medium flow.. the 13 we done the deed while still bleeding

(kinda gross, but it happened) well, it kept going after he finished inside of me.. the 14th, it was VERY light, it was a flow,, but it wasnt heavy at all.. then the 15th. the deed was done again.. before it was done, i was basically just spotting.. it wasnt heavy enough to come out on my pad. just when i wipe.. then that night, there was NOTHING.. the 16th the was one TINY LIGHT PINK drop of blood when i wiped.. that put me having a normal flow for 2 days, and spotting for 2.. thats 4 days..

my periods are ALWAYS LONG AND HEAVY!

IT HAS NEVER RETURNED!

My question is, Even though its slim to get pregnant on your period or any other time then ovulation, has this happened to anyone and you have been pregnant..

MY FERTILE DAYS are the 26-31 of Dec..

WE done the deed yesterday.. the 26th.. TWICE :)

which i was fertile. by calendar and testing..

**I done some pregnancy test after AF came and they were NEG.. was that too early?

Im getting very impatient.. i need answers..