Kind of worried

For Christmas my mother-in-law decided to get me and my husband a new pair of bedsheets. They were definitely new and we’re not taken out of the package yet so yesterday when we got home we decided to put them on our bed and rearrange our room. Everything was perfect. Me and my husband have been trying for a baby for a little over two years but anyway I woke up this morning and there was dried blood stains on our new sheets! So mad! Anyway I am supposed to be starting my period soon, and (my cycle has been all out of wack ever since I gave birth to my son 3 years ago.) but I haven’t seen any sign of it at all today other than the blood that was on the sheets. I was suppose to start my period 3 days ago according to one calendar but my Femia app is saying I was suppose to start today.I’m very confused.