I'm still doing the same exercise I did before, although right now ms is making running somewhat impossible unless I want to barf on the treadmill
I was pretty terrified at first.... but I got two different doc opinions and both assured me all the same exercise I was doing before is fine... intercourse is absolutely fine... even despite my previous losses.
Currently I'm doing weights/resistance, walking hills, bike, elliptical, or stairs... and I'm not opposed to running I just don't have the stomach for all the jostling right now.
Honestly, unless you have an issue like placenta separation or maybe a subchorionic bleed, there's really no reason to be concerned about exercise or dtd.
If exercising is something you don't mind putting off for a little while, and the worry will consume you, then definitely don't cause yourself the extra stress.
If you reallllly want to exercise but are reallllly nervous about it, check out some of the research I've been doing on it (that's how obsessive I've been) https://preggopower.blogspot.com/
and also google "Cassandra Forsythe".. check out her 'old blog'... it's got GREAT stuff about fitness and pregnancy.