Which weeks safe to have sex during pregnancy?

Hi mummies which weeks that are safe to have sex during pregnancy? Did any of you have sex during second to third trimester? And need use condom? Husband is too scared to hurt the baby so we havent had sex since the day i found out im preggy🤣🤣 Now 7months - about 30 weeks.. my gynae is a male so im not sure if appropriate to ask this kind of question lol