How often is it alright to keep in contact with an ex?

i just went through the same thing. you can contact her every couple days if you feel like it because you have given her plenty of space these past few months. whenever you text her ALWAYS be the one to end it first. tell her you are busy with something and have to go. this will get her to be the one to initiate contact with you. after a couple weeks of her texting you, you need to IGNORE her COMPLETELY for just a day or two then text her and tell her you were extremely busy. you will be amazed at the texts that she sends you those couple days that you ignore her.