Hi, I know what you're feeling, we've all been there! Just don't worry too much as when you get to know your bub, you would know what to do... anyway,

I BF my DS for 6 weeks but that doesn't him to settle him so I put him on the bottle, we bought the NUK ones and have been using them eversince, they said it's anti-colic but DS had colic anyway until about 5 months and after we changed his formula (S26) to step 2 for his 6th month...

One thing I can say as well is that if your bub do have colic I can suggest Brauer colic relief, it worked wonders with my DS. HTH!