Hi! Just After A Bit Of Reassurance Really. Last Month

Hi! Just after a bit of reassurance really.
Last month I had a bit of brown discharge four days after starting my pill up again after my period, and then after intercourse the day after, he had ejaulated inside me, it came out a bit pinkey! I had had sex with my partner for about three times prior to this, so not sure if it was just irritation??!!