Feel thankful you got a break. Mine lasted all the way until 20 weeks. FYI...if you're allergies are bad, that can make it worse. Take claritin if you need.
Same thing happened to me! Around 14 weeks, I thought it was over but then at least once a week I was throwing up in the morning. Then I'd just get sick like once every two weeks. Luckily, I haven't gotten sick in about a month! Hopefully it'll get better for you!
Re: feeling morning sickness in week 18
Mine has come and gone throughout my pregnancy. I have thrown up as recently as last week.
Sucks but totally worth it in the end!
I'm in the same boat -- so, OP, be grateful for the break! And I hope ALL of our m/s goes away for good soon!