Wa alaikum salam,

I am assuming there was no intercourse!

Yes, you must estimate and make up these missed days.

Assalaamualaikum Sheikh, When my husband and i first got married we didnt know that a womans orgasm requires ghusl and breaks the fast, so we used to engage in this during Ramadan. Im not sure how many times we did it. But do i have to make up these fasts? and if so do i just have to estimate how many? JazakAllah