Could I be pregnant?

Hello to all. So more than 2 months ago I was getting lots of “creampies” or came inside. The doctor told me I couldn’t get pregnant so my boyfriend and I took it as alright well now we can do creampies anytime. At the time my period wasn’t due for another week. I got came in a lot.

When my period came it was one day of bleeding not a heavy flow at all. Maybe a teaspoon the whole day. The rest of my period consisted of 3 days of very very light spotting.

4 days before this months periods due date I spotted very very veryyyyy light for three days once a day.

I had lots of heart burn and acid reflux problems for maybe 2 weeks straight around the time I had the 3 days of spotting and it’s kinda gone now.

So my next period of this last month hasn’t came yet. I took a pregnancy test it was negative and maybe it was too early.

Now I am 11 days late on my period as of September 19th 2018.. I just figured bc of my diet. What do you ladies think? Sorry for the typos.

Also my period has been regular for the last 2 years so this is why I’m worried.