Is this your 1st pregnancy? You will soon be faced with other common pregnancy complaints. So you need to read up in advance to prepare yourself better.
I recommend "Conception, Pregnancy & Birth" from Dr Miriam Stoppard". Another great book is "What to Expect When You Are Expecting". There are 2 versions: UK or US.
Try glucose sweets / drinks if the energy drinks do not go well with your stomach. My personal fave is a packet of Ribena. Eat fresh fruits, as an alternative.
How long will it last? It depends. If you are lucky, by the commencement of 2nd trimester. If not, you may suffer it throughout your pregnancy.
All the best.