Hello, I understand your concern. First of all, you must be aware that all weight loss products are associated to side effects, because they all contain chemicals which, in one way or another, are intended to interfere with certain processes in your body. In order to answer your question I had to do some research myself so I can back up my advice. While the side effects widely vary in nature and intensity in different people, there have been many reports from people using these products complaining of low energy and mood swings. In fact, there is a long list of side effects associated to these products, such as headaches, stomach problems, dizziness, dry mouth and even weight gain. While do fine and benefit from these supplements, others not so much. Being that you are already experiencing symptoms, I recommend you stop using them altogether and choose a more natural approach to weight loss, such as a healthy diet, a metabolism boosting regimen consisting of a size controlled regimen (i.e. eat a good breakfast, a moderate lunch and a very light dinner) as well as a workout routine that is fit for your type. But take a pregnancy test anyway. Just for peace of mind. Wishing you all the best.