Bleeding several days after end of period

Adele

Hi need some advice please...i had my first proper period last week after coming off the pill the month before bled as normal for 3 days instead of the usual 4 then all stopped, had some stomach pain this afternoon but put it down to IBS, just been for a wee and now lightly bleeding again with a patch of blood on my knickers....is this normal??? First time ttc!