What does this mean

The last day of my period was the 19th and then we had sex the 20th the 22nd the 26th after we had sex the 20th three days later I was lightly bleeding a pink color Today’s the 27th and I am still bleeding a light pink color light cramps nothing severe bloating very gassy

And we were at my dads Friday and my two-year-old little brother lifted my shirt up and put his hand on my stomach and said sissy baby