Period change due to TTC?!

Emily • Mommy to 2 Angels. Quinn 2-4-16 👼🏻 & Finley 5-20-16 👼🏻. TTC our ❤️💛💚💙💜
Has anybody ever experienced a change in their period once they started TTC? We have been trying for about three cycles now and my AF is worse than ever! Like bad cramps, backache, and it's really really heavy... 😕 has anyone else had this or any kids of change happen? I'm in so much discomfort so if this is normal I'd feel a lot better.. Starting to worry!