My doctor already told me im at a high risk of a MC

I will be 11 weeks on sunday!

so a couple days ago this white thing came out looked like tissue but no blood in it or anything just white and today another one came out and like 2 weeks ago some came out then too... idk if im misscarrying. I been getting sharp pains in my sides and bad cramps but no blood... im so scared im misscarrying... is this a MC , how did yours start off if you had a MC

And sorry for your losses 😔