Heavy period

Rose 🌹 • 18 months down, but finally pregnant with Baby no. 1!
This is my first cycle off birth control pills in 5 years. They were also controlling my horrific heavy periods. 
I didn't conceive this month (as expected) so now having an awful, heavy and extremely painful period. 
Other than baths, hot water bottles and lots of tea and chocolate, what can I do to get through such heavy cycles? Is there anything on the market to make my periods lighter without affecting fertility or acting as contraception?