Nausea, vomiting and short periods.

🇰🇷💑🇮🇹 • 37, due 2/14/2020 with baby #4!
Has anybody else had nausea and vomiting about a week - week and a half after your period. Also having 1 1/2 to 2 day periods. Talked to my doctor but he says it might be stress. I kept telling him I am not that stressed but he says to wait it out and keep a diary about what makes me nauseous/ vomit. Blood tests and hpt have all been negative and have been like this for about 3 months.