I just found out I was pregnant !!!

Ma

Although I just found out I was pregnant I recently had a miscarriage so I'm still very nervous that it could happen again . I even told my husband I don't want to have sex until our first check up , because of penetration, spit as lube , germs and cum . Idk maybe I'm thinking to much about it ? Could you ladies help me out !? Is it ok to have sex this early or not ? ( Last time I was pregnant when we had sex I spotted a lil like it irritated it and then they put me on threatened miscarriage )