Advice please

Joanne
Hi I'm Jo I'm 35, tcc for first baby, I have my period every 27-32 days and last for 6-7 day I finished my period on Wednesday and today which is Saturday I went to the toilet and when wiping I found blood on the tissue this has never happened to me before should I be worried or not why and what is this??? Please help me thanks Jo 💗💗💗