5 week post SA, I think I’m starting my cycle

I think my period is starting today or tomorrow because I woke up with my vagina extremely sore and I have the worse cramps. Honestly I’ve never had painful periods so this feels terrible and feels like my vagina did right after my abortion. My vagina is extremely sore. Was anyone else first period after an abortion painful. Should I expect it to be heavy and a full 7 days? I’m honestly debating leaving work, I took 4 500 Motrins and it’s done nothing.