Talk to Gynecologist on Periods Irregularity

I'm 26 years old, I have two kids Alhmdulillah. I had a miscarriage and DNC in 2016. Than in 2017 and 2019 Allah blessed me with babies, both deliveries were cesarian. After second delivery in October 2019 my periods became irregular and my body is swelling and I'm gaining weight continuously. This time when my periods started the bleeding is thick blackish and today I observed some small pieces of cotton in previously a couple of months I observed the same but I overlooked it, but this time I checked it thoroughly it looks like cotton to me. May I visit ur clinic tomorrow and with the help of ultrasound or CT SCAN it can be checked that something i.e, cotton etc remained inside during delivery??? Your kind and early response will be highly appreciated. Regards