DS2 (14 weeks) is breastfed, exclusively. He's been inclined to posset for ages, and I've not done anything about it. No more than a tablespoon or two at a time, and often curdled. It seemed to be reducing over time. (His weight gain is good.)
Last night, he vomited loads. I'm pretty sure it was a full feed, and it shot out at high speed and alarmed me. I needed a towel to sort things out. He's just done it again this morning.
He's had feeds in between, successfully. He doesn't seem unwell or unhappy or feverish. He does have a cold, which he's had for ages.
Do I bother talking to a doctor? My gut instinct is, no, it'll sort itself out.