Question

Ashley • Oliver: 10/6/16 💙 Baby #2: 9/30/19
I may be around 5DPO and have been feeling a heaviness in maybe my pelvic floor... I usually only feel this when AF (TMI ahead) is in full swing and my body is sick of holding onto a tampon 
​Anyone ever deal with this in the past and anyone know what could be the reason?? 
​Thanks