PreWorkout Supplements

Okay, so I've always worked out on a regular basis... I've also always used pre workout supplements up until a little over a month ago to power through my workouts. Since my hubby and I are TTC I am hesitant to take any pre workout supplements... And then especially when that wonderful day comes we find out we're expecting! Do any of you use a pre workout while TTC/ during pregnancy? Have any of you found an alternative/ something natural that helps with energy and focus during your workout? This is all so new to me...