Bbt chart, I'm a little confused

Okay so when I first started using glow it said I ovulated on 3/5 and I did have some cm that was almost clear and stretchy & O pains on the left side but no postive opk but then I had a temp dip on 3/10 with a postive opk and tons of creamy but stretchy cm when I would use the bathroom so I'm really confused. Now the only sypmtoms I really have is nausea that comes and goes, bloating, peeing a little more then usually, and my veins are more vivid on boobs and nipples (tmi) and they look bigger. Here is my chart, has anyone has experienced this and found out they was pregnant?