My question involves labor and employment law for the state of: Maryland

I sent my resignation notice via email two weeks prior to my starting date and didn't hear anything back from my future employer. I assumed that he received my email and accepted my notice. I didn't do any follow up email or a phone call. I received a reply email back from him on the day supposedly to be my starting date - he was upset and threaten to sue me if i didn't show up to work now because he booked patients for me. I'm in a healthcare field.

We had a contract. Our contract stated that I need to give a 30 days notice and it has to be in written and certified mail, the employee will continue to work till 30 days up. Since I haven't started working there yet, I assumed that it was not applicable to me as long as I gave him two weeks notice in advance. There was no agreement on how to terminate the contract prior to the starting date. My assumption was probably the biggest mistake i made. There was no agreement on how I will need to compensate him if i don't full fill the 30 working days from my notice. I didn't take any payment in advance from him and the new practice I'll be joining is out of a non compete zone.

My question is can he sue me for causing damages to his practice because patients were waiting and not giving him a notice in the form that we agreed upon in contract. I am assuming he didn't see my email till the day of. Be mind, I agreed to observe at his practice a week before my starting date and I didn't show up for that day, but no complains from him. That was also a confirming factor for me that he received my email. The only thing is the observation date was not written in our contract, it was just an oral agreement and I do not know it could be used in court against him.

I just want to know I should be worried and on what ground he could sue me for. Should I be getting an attorney now?

Thank you in advance for any advice!

- A distress client