Side Sleeper

My baby rolls to her side almost every single time I put her down in her crib. I am so paranoid about SIDS but I can't seem to stop her. For the first two weeks my husband and I slept in shifts and kept moving her to her back and watching her...but we need to sleep. Anyone else dealing with this? I've read there are wedges and different things you can use to keep them on their back but that they may not be safe. I had one doctor tell me I need to keep her on her back and another tell me if she starts out on her back and rolls on her own it's OK. The contradicting advice has not helped me to feel much better.