Coming off the pill

Georgia • I`m 18 and a married military wife! 03-10-15 💕
I've been on microgynon 30 for about 3 months.. I took two pill packets back to back, then came off it for a week to have my 7 day break. I had a withdraw bleed that lasted 3-4 days, it was very light. On the first day of my bleed, I took out my tampon and a weird, sack like thing came out on it.. Sorry TMI... I can't explain it any better than that.. I started the pill again and now I'm on my other 7 day break... It's been 4 days and I haven't had a withdraw bleed yet. I've gained 4 pounds, I'm bloated quite a bit, I feel sick all the time, I could sleep all day if it was an option! I'm just a little confused.. I took a pregnancy test about a month ago and it came back negative, I'm just a little confused about what's going on. Anyone have any advice? 😕