Catholics: Do you think my confession was valid?

I went through a period of extreme mortal sin, and I hadn't been to confession in several, several months. I just went today for the first time, after gradually rededicating myself to Christ and the Catholic Church; I had been almost on the verge of apostasy a couple of months ago. However, I simply could not remember 99% of my mortal sins, because I committed so many. I also forgot to confess that I had missed M every week during that period. I just confessed some of the major ones on my mind, and a general statement that I hadn't been following any of the laws of Catholicism. I'm sincerely sorry for ALL of my sins though, but do you think I received absolution even though I didn't remember so many?