I had an abortion mar 14' 12 (17wks p/g) & have recently (since dec 15) been trying to get to p/g. will that cause me not to be able to conceive?

Possible: One uncomplicated abortion is usually not a concern, although 2nd trimester (17 weeks) is riskier than 1st. Possible complications are tubal blockage and/or uterine scarring, you can be evaluated by a doctor to check this out.

Wait more time : You really don't need to start an infertility evaluation before you've been trying at least 6 months. Have intercourse around your ovulation for a few months before jumping to conclusions. Usually a single uncomplicated abortion will not cause you fertility problems later. If still having difficulty in june consult your doctor.