Is sex safe during 1st trimester?

I have had a miscarriage before so I am just really cautious. I was ovulating a week ago and we had sex on my most fertile days (took ovulation tests). It's obviously too early to find out if I'm pregnant or if my body is in the stage of becoming pregnany. Can me and my husband still have sex? I just don't want to disrupt my body or another miscarriage to happen.