Embarrassing question

I haven’t been very well informed. I was told at 20 weeks my placenta was low lying and I would be scanned again at 32 weeks. I was not told not to have sex but had read online so me and my husband were a bit hesitant but tried once and everything seemed fine. I then went to see a doctor at 25 weeks who said absolutely no intercourse and no more was said. Have now been reading that includes orgasms. I thought was just penetration I didn’t realise orgasms were also so dangerous. What is everyone else with low lying/ placenta previa doing?