Exercising after bedrest?

Erin

I was diagnosed with a SCH at 9 weeks and told not to exercise until it cleared, which was at 20 weeks. Now I want to exercise (so I can get my pre-baby body back asap!) But I have no clue where to start. I've never regularly worked out except for walking my dog and sporadically doing squats when butt looked flat😅

Any advice? (Currently 21 weeks)