not sure how long my cycle is?

Haley

So I've never had regular periods so I'm not sure how long my cycle is. I know i had my period Nov 4th and again Dec 1st. So does that mean I have a 28 day cycle? When should I expect my period? My husband and I are trying but I'm not sure when to test. I know I'm so tired of seeing negatives but it may also help if I know when to test. Please help. I've never understood this whole cycle thing. lol.