Do i have sex or wait?

Not sure if im posting on the right group?? Ive had 2 miscarriages in the past im now 13 weeks pregnant and not had sex with my fiancé since i found out i was pregnant which when i was about 3 weeks pregnant , is it safe to start having sex now or is it bad to start now after waiting for so long??? Id rather not start if it was going to cause anything but I obviously want to if its safe ??

UPDATE:

My drs told me to wait until i was 20 weeks pregnant because of my past history but my midwife said theres no reason to wait until then? What do i do?