Meghan Markle and Prince Harry saw fertility doctors in the months before their big wedding, Breaking Celebrity News has exclusively learned.

The former Suits TV actress will turn 37 in August, and the two feel the ticking of her biological clock, a royal source revealed.

"Harry and Meghan want to get pregnant as quickly as possible after their wedding," the source told Breaking Celebrity News.

"They both know that as Meghan gets older, it can be get increasingly harder to conceive – and they are both keenly aware of her vulnerability to health complications and the chance of miscarriage the older she gets."

According to the royal insider, Markle and the Prince, who is younger at 33, have both seen nutritionists and doctors who specialize in giving clients diet, exercise and lifestyle programs designed to maximize couples’ chances of getting pregnant.

Markle has already said she would be prepared to look into IVF as a way of getting pregnant as soon as possible if there were signs she was having difficulty conceiving, the source said.

"The only issue is that she knows she is heading for the big 4-0, so knows the sooner she gets pregnant the better."

Also, Harry's brother Prince William's wife Kate Middleton has suffered bad morning sickness, most recently having third child Louis at age 36.

Markle is believed to have consulted London-based nutritionist Melanie Brown at the end of last year, who visited the former actress in her new Kensington Palace home to give her tips on conceiving.

And it is believed that since then, Markle, and also Harry, have visited other medics and nutritionists in the run-up to their May 19 wedding.

Brown has said she focuses on "pre-conceptual and pregnancy nutrition, including weight loss and gain and immune issues."

Rumor has it that Harry has consulted nutritionist Gabriela Peacock separately from Markle for advice on slimming down for his wedding and doing everything he can to increase his fertility.