Hi I was wondering how long I had to wait to take a pregnancy test? I'm breastfeeding and don't get my periods. I just had un protected sex last night with my partner.

You should wait 1-2 weeks after you miss a period. If you had sex last night its WAY too soon. Its unlikely that an egg has been fertilized yet (that can take several days). If you aren't getting your periods, then I would wait about 6 weeks.