Welcome Katie!
I'm sorry that you had to go through that, nobody deserves to be in an abusive relationship. I hope you are eating better, more, and healthier now. May i ask how much you weigh now?
It really depends on you what you want to do. Me personally, i do BOTH, cardio AND strength training on the same day.
If you need to work towards a fitness goal, join in on the April Challenge.
If you need anything, we are all here for you.