i had my second child by planned c-section 14 weeks ago.  the c-section went well with no complications and a healthy baby

i stopped bleeding around 8 weeks.  last week (at 14 weeks) i wore my pre-pregnancy jeans which are still very tight on me.  i then had some bleeding for a day or so.  i wore the jeans again today and the same thing has happened.  i am very worried this is the sign of something serious.  does anyone else have any experience of this?  the blood tends to be reddish brown in colour and there's no smell (sorry this is so disgusting)

i had a smear test when my baby was 12 weeks old and that was totally normal.  apparently, i have had a very slight prolapse - could this be the cause?

i want to stop worrying and enjoy my baby - please help