She throws up a lot after breastfeeding. Is this connected to colic? The milk is usually fresh. Also I started giving her infacol, hope it is okay

Yes. This is spit up or reflux that can be aggravated by colic. Usually baby will outgrow this as they grow and as long as baby continues to get the rich hind milk and is adding weight during the clinic checks then no worries. Nifco is okay to relieve the symptoms. You as the mum can also get dill seeds and boil and take thrice a day as dill is excellent for relief of gas and its benefits are passed on to baby during breastfeeding. You can find dill seeds in Healthy u or Chandarana supermarkets