I started on a Evenity I am having extreme fatigue,.

carl85087,
I see your question is three days without response. I haven't experience with Evenity, but have a friend with so many adverse reactions that she won't take another shot.
Nausea, and abdominal cramps can be a sign of an allergic reaction. From what I'm reading fatigue is fairly common. If you use the search bar for Evenity side effects, you'll find a very recent, very lively complaint-discussion. Some people and the literature say that the effects can lessen over time and with future injections. You might want to talk to the prescribing doctor. There may be another medication that would be with no or different side effects. I've only been on Forteo. It has been without side effects.
My friend had abdominal cramps with extreme pressure on her abdomen. But she also ached in every joint.

Just found this thread and yes, I’m experiencing extreme fatigue on evenity. I’ve had 3 treatments and will receive my 4th mid May. The tiredness started about a week after my 3rd and I now find it difficult to do much before needing to sit or lie down for a rest. I have always been very active so this has been really difficult for me. I’m hoping this passes as my treatments continue.

I have had one injection. I realized that I get very tired around 6:00 p.m. which is highly unusual for me. Decided to look up side effects and noticed fatigue. No other side effects.

started evenity last week on day 3 noticed fatigue hoping it decreases no other side effects so far

Yes, I started experiencing fatigue with my 3rd round of shots, but I hadn't noticed it prior to that. I have had GI issues since the beginning though: a few bad days and then a good day or two...then bad again...
Last night I ended up in the ER with pretty intense jaw pain 12 hours after my shots. It subsided after 5 hours. Very strange.