Chemical pregnancy


I had my positive tests and later on 9/11 I started my period...I bled for 5 days and have not been bleeding..yesterday while on vacation we were about to get into our Uber and I just felt something warm. I told my husband we needed to go back to our room, within 5 minutes I had blood running down my leg. Thank goodness for his extra shirt !! Sat in the shower to rinse off and as soon as I sat down this chunk came out. That is a solid chunk of idk wtf. Has this happened to anyone DAYS later after no bleeding ?????