Had natural miscarriage on june 14 everything came out on its own. i had unprotected sex on august 13. no period from time of miscarriage to august 13. on august 14 i had spotting and weird bleeding for three days which was nothing like a period and i had

Difficult to tell: Your question was cut off, but your spotting on 8/14 may have been a period. If you are trying for pregnancy, there's no harm in unprotected sex. If you want to wait a cycle or 2, i would use protection until you have a normal cycle, just so you know in your mind, that your body is 'back to normal.' after a miscarriage it can be up to 6-8 weeks typically for a normal cycle.