Help me please

I just got off b.c March 29th I had my period twice at the beginning of april, I'm not due for my period for another 10 days according to this app, I have a two year old and today and some yesterday I've had brown blood my fiance and I have been trying for a baby and when I just Googled brown bleeding before period it told me the most common reason is pregnancy, my question is how often does this happen to you other ladies, what's the possibility? I do have some symptoms of both pregnancy and my period which is cravings and bloating and my boobs are a little sore/tender and my boobs have gotten a cup size bigger since I've had the b.c removed, but I am also stressed due to other circumstances