Switching from Depo to Necon 1/35

I was diagnosed w/ endometriosis when I was 17 - after a few years of tests, pain, and not going to school for a full week in God knows how long.  I had surgery at both 17 and 19.  Before I had surgery the 2nd time, I had been taking Ortho-cyclen (I believe), and I ended up having a 6 month period.  Since my surgery at 19, I have/had been getting depo injections every 9-10 weeks.  At the time I began this, my doctor told me that was really the only option besides having a hysterectomy (sorry if the spelling is off).  I have been on the depo for 7.5 years, and over time, it has just caused more and more side effects - moodiness, leg pains, crying constantly, and my most recent bone density test results were osteopenia.  So...I decided it's time for a change.  I went to my OB and she put me on Necon 1/35.  I have been taking it for 5 days and I have had the worst nausea, I am exhausted, and I am not hungry.  I called the office to see if there was anything I could take for nausea and what was prescribed is something I can take at night only, due to it causing drowsiness.  I was wondering if anyone had any suggestions or experiences w/ switching off of depo to a pill and having endo.  My doctor just had me start taking the pill though I am not actually due for my shot for another week - at the end of my shot cycle, I generally get VERY emotional, but the nausea and fatigue are new. I have really been struggling at work this week due to it.