please help ladies

okay so in July I started bleeding ammonia smell very very strong I had a chemical pregnancy and now this month my period was off see I spotted two days when my period was due it was brown/pink and then just brown the first two days my period was due and they say don't count those days bc u wasn't full on bleeding and in that case I was two days late and I actually started to full on bleed so that makes today my 2nd day of period but anyways my pad smells like ammonia! has this happened to anybody what was wrong with u if this happened to u!?