Is it possible?

Haven’t had my period in 3 months or so and started taking vitamins and prenatals this month. I ovulated around the 16th. Still no period, not sure if it’s possible to get pregnant this round because I haven’t had my period in months even though I ovulated. I’m not sure when to test either. I did today and it was negative. I’ve been having cramps, twinging in my ovaries, extreme mood swings, backache, headaches, sore and veiny boobs, etc. I’m so new to all of this & ttc so any help would be appreciated. Thank you ❤️