Implantation or early period?

Marie

Hello I am new to this group and we ( hubby and I) are only a few months into trying to conceive.

I wasn’t suppose to start my period until next week, March 16th and suddenly March 10th I had what I thought was my period. But it was way lighter than normal and only lasted 3 days. The only symptom I had was sore breasts. My periods since being off the IUD in December have been heavy with cramping and back pain.

On the app I changed my period date to March 10th which adjusted my ovulation dates to Feb 20th- February 26th. My husband and I had sex on feb 21st (during my new ovulation window) .

So my question to the group is.... was my 4 day spotting streak my actual period or was it implantation blood?

Thank you all for all the comments and helpful tips.