Hi, Me And My Husband Had Unprotected Sex Three Weeks

Hi,
Me and my husband had unprotected sex three weeks back and now I supposed to get period but it sint came and I tested in home using pregnancy kit and.it is showing positive and me and my hubby don't want kid now so can pls assist in coming out of this problem...
And I wanted to know safe method to abort so that in future when we wanna have kid thr will be no problem.. Pls suggest tablet