i am 39.have had 6 live births...bleeding

i am 39.have had 6 live births..sometimes when i use the bathroom ,bowel movement,i wipe blood from my vagina. my periods have been irregular for about a year soemtimes n ot coming for months..and when they do come sometimes they are very very heavy other times no pad needed just light blood when i wipe.also sometimes when i have sex i bleed but then when i clean up its gone..is this part of menapause or something else?