Siding with employer or employee here?

After ten years of service at my job, I resigned my post Wednesday afternoon to start something new for a company that doesn’t have a presence in the same market but is in same industry.

My boss, who was one of 3 original founders calls and offers more money to stay. I politely decline. He says to think about it over night and that the CEO will call me to discuss and pleads that I answer the call. Ceo never calls and I never hear from my boss again. I continue with resignation Thursday morning.

Now here’s my question. It was my understanding that it be pretty customary to carry the employee on medical coverage through the month of resignation. I have paid my insurance premiums already in my 3/15 paycheck. My wife is pregnant which they know. Upon walking out of our first ultrasound Thursday, I received notification that medical benefits would terminate that evening. Just last week, I closed about $3mm in revenue for this company, on top of 5 consecutive years of 40% growth YoY.

Anyway, I have arranged medical coverage through month end, but my new employer’s HR head said in 30 years, he’s never heard of a Company terminating medical before month end.

So, dick move by employer or not a big deal?