Is it possible?

My cycles are very irregular, I had gone at least 4-5 months this last time without af coming to visit, this last month I felt symptoms but I think usually it's just wishful thinking, so I tested anyway and it was neg and then I started...but I've been getting cravings and I never have had them before even with my first daughter, I have a strong sense of smell all of a sudden and very moody which is unusual for me as well, plus acne...I'm sure I'm just over reacting but is it possible to have been pregnant and still got af? I'm trying hard not to TTC so I can relax but it's really difficult thanks :)